The video makes great points. It is at least an attempt to give some real definition to why the Sims 4 seems "shallow," which can be hard to pin down.
My own experience for hitting the road on Sims 4 and where I wanted to see things play out differently is beef with how few unique ways to play, interact with the world, environment, and other sims.
I played the happy/inspired happy/focused, etc, sim. Been there, done that. It gets boring fast. Eventually just looking at all that smiling made my face hurt and listing to that chime over and over made me want to flip the bird. In The Sims 3, sure, I'd do the same few repetitive things (from a long list of options) to get my mood up for the day, but they were definitive and made the character unique, and there was a whole world to interact with, with unique characters that were just as fun to watch as get to know. In the Sims 4, just the same few things over and over until you die. So, I thought, I'll play a melancholy sim. I'll pick traits, spruce up my place, and live my life interacting with people and objects to be as freaking sad as possible, and build some lucrative career out of my misery.
No.
I picked traits so I could be sad, but sadness is not very complicated. I saw that I could check the obituaries as a consequence of being sad, so I assumed this would be a daily task I could perform to gear my mood up for work or a task, which I found hilarious. But, no. I could just check them, to no consequence, no effect, nothing at all but killing time that kills the mood.
There were other objects in the world I assumed would contribute to a sad emotion, such as "sadnum," (I assumed it would make me sad by the name, unless I am mistaken, in the vein of "romantium,") but no, all metals give a boost to "confidence," regardless of their name.
I couldn't even eat or upgrade my toilet without becoming so ecstatic that any hope at of having a successful career with the sad emotion went down the toilet.
The only thing left to do was lock myself up in a room with a handful of my own sad paintings and paint. Not upgrade my home. Have nothing to spend that hard earned cash on. No unique clothes ore wares, no way to choose the color scheme in my home. No way to benefit from decoration besides my own sad paintings. And no way to interact with the world as a melancholy sim. Nothing. Nothing at all. Can paint yourself blue creating the same sad pictures over and over and there is nowhere to go from there. Continuous monotony.
Any variety in the emotions from the happy/inspired, happy/energetic, happy/focused is seen as detrimental. While there should be things that are detrimental, of course, there is a severe lack of ways to live life. A real lack of flavor. That leaves a lack of depth and humor, and lack of interesting interactions between sims of different stripes. Carl is right. Overwhelmingly, all sims seem the same.
So, to spice up the Sims 4 for my liking, I would like to live live in different ways. I would love to play as a sims that is truly sad, or angry, as a total life choice, with benefits and detriments, that is way more fleshed out and immersive.
With the risk of making this post overlong, I am also a player that did not like loading screens. I was in the middle of playing the Sims 4 for the first time when I upgraded computers. My Sims 3 games took forever to load, but when they did, that was it. So, when I got a new computer I expected that those pesky Sims 4 loading screens would pass by in a matter of seconds. No. I got absolutely no performance boost or reduction in loading screen time for The Sims 4 when I got a pretty swanky new machine, while my Sims 3 games loaded up in seconds and ran gloriously.
That pesky Sims 4 loading screen gets longer and longer the more you put into you home. Simply having one of each regular plant (not the alien ones) was enough to make the loading screen unreasonably long. Don't get me wrong, I like going out and looking for plants and crystals and setting them up in my place, but geez. Going out the the bar and going home became a nightmare. I spent more time on loading screens than playing.
Since my social interactions and activities out in the world were pretty lame and I saw the same handful of boring people everywhere I went, I decided to become my homeward bound and make my house a sanctuary. I thought, I'll just do all I can from home. My stuff, career, plants, collectibles, friends. I'll bring them all here. That's ok for a while, but it's boring. It gets done pretty quick. Careers and whims were no better. Nowhere to go. Loading screens all over the place. A dead end of monotonous game play on every career real fast, with whims completed, so no choice but to keep changing careers in order to keep playing. I get so bored and get so much done by the time I'm designing and decorating my second home, after upgrading from the starter home, that I quit. Every time. After a very short time, the Sims 4 to me becomes a monotonous prison of eating (the same old thing so I don't get fat even when I watch the hunger bar and stop eating as soon as it is filled), sleeping, and going to the bathroom. I can't even get through the welcome wagon anymore.