I haven't watched the video, but I remember that in my own experience running a bakery was frustrating and unsatisfying. I just tried it once and never felt the need to try again. I love the set, though - it's among my favourite store content because it looks so pretty and the oven is awesome. Now I usually make a bakery with the decor from the set, but without the bakery shelves and till, and add a University barista bar so that my sims have a place to go for cakes and coffee.
The things I didn't like about running a bakery:
- you have to go into buy mode to place the baked goods on the shelf. The sim can't stock the shelves
- the customers come and buy the baked goods very quickly, then start doing something else. They never consume what they bought in the bakery.