By most accounts most of the big 90s guys are well-adjusted. Genndy is a workaholic and likes to be as hands-on as possible but is very friendly and easy to talk to, also highly efficient and good at delivering exactly what studios order without going over time and budget. Rob Renzetti is a bit reserved and nerdy but also great at doing his job efficiently, organizing all the pieces of projects and effectively communicating when changes need to happen. The Phineas and Ferb creator duo are California surfer guys, very laid-back and effortlessly able to do what they do, they really do see it as fun rather than a hard job. Craig McCracken is a bit more art school and fond of countercultural music, late nights, and smoking pot (and seems to have somewhat of an /ss/ fetish) but is still a good guy who keeps himself focused on positive thing. Joe Murray has had terrible tragedies in his life but has managed to cope, became a Buddhist who is very emotionally attuned and is currently enjoying his life raising several children. Craig Bartlett is a totally normal guy who stumbled into his line of work but stuck around just for his love of character and story, his only ambition to do right by characters his audience cares about.
I think the normal people working on shows still outnumber the crazy ones, the internet just tends to focus on entertainment value and they find it in drama