I haven't noticed a huge increase, dying of laughter has always been the most common danger in my games, after freezing to death lol. It's just way too easy to be super happy. Tho, with some sentiments now causing playfulness, and the new like system which can add even more random happy moodlets, just walking into a room can sometimes cause instant hysteria these days.
That's what happened with this sim, who was so happy spending Winterfest with her family and got a playful moodlet from having a sentiment with one of her kids. Walked into the room where they were decorating the tree, and BOOM, dead before I even I had a chance to do anything about it lol.
https://i.imgur.com/MfTdjjE.png
Fortunately in this case Grim listened to her husband's pleas and took pity on them, choosing not to take her away on a holiday right in front of her four children :(