I'll dig more into it. I did a quick search on Yandere Simulator, and it suggests that the terrible code and assets that aren't optimized is then impacting performance of the game, that it's laggy. This person might benefit from higher quality code, no? Someone who has a talent for making games, but just can't get there technically.
I'd guess this might be one of the videos you were referring to, for others who are curious: https://www.youtube.com/watch?v=sXotP-9LcDY