I will never get why 30-40+ year olds with a modicum of fame act like this, like Anthony Cumia, Ethan Ralph, Moviebob, Maddox, Onison, Carl Benjamin and Jim Jefferies. Like, it's not the end of your life, but it's the age you should have a career and should have started a family by. I don't get why these faggots can't do a little self-reflection and get themselves in order. It's not like you're in you're early 20s where you can act like that. I might be moralfagging a bit but you ought to act like a fucking adult for the sake of setting an example of kids, not reliving you're fucking glory days. I might be a bit

thinking these faggots would learn that seeing they have their own threads for the most part, but it's still as grating to see people that are old enough to raise a family be such personal trianwrecks and/or cucked exceptional individuals.
I can't speak for every one of those examples, but in my opinion it has something to do with how isolating being famous can be. Without decent friends (as in, they are both decent friends and decent people) you can very easily lose your own sense of being grounded. Doubly so if you fill the vacuum left by a lack of friends with fans of yours, who will
not treat you the same way.
Using Egoraptor as an example, considering his fame and reach, how is he supposed to have a normal ass friendship? He can't make normal friends at work, because everyone he works with is a fan of his
and he's their boss. He can't make normal friends through his hobby (video games, animation, youtube) because those things are his job and in those circles he's surrounded by fans of his as well. He's married but I don't think that anyone would regard Suzy as a positive influence in his life.
Meeting people (even if you meet people who aren't explicitly fans) when famous also means that you have to be super cynical about
everyone's intentions. Are they a scammer? Are they lying? Are they waiting to pitch sales or a collaboration? Are they just saying what I want to hear; and so on. It makes normal interaction remarkably difficult, even considering that normal interaction is hard for "normal" people. Considering all those factors it's very easy to get isolated.
Once you're isolated it just becomes an echo chamber of people telling you what you want to hear. I don't personally blame Arin for coming disconnected from reality because if I was treated as a comedian and thousands of people told me I was hilarious basically every day, I don't know that I would be able to remain self-critical. If I half-assed merch and it sold out in seconds, I would think it I was a marketing genius; and so on.
I don't know any of the Game Grumps staff personally, but I don't see anyone working there being able to talk to Arin 1 on 1 about the direction of "his" show and how they might not like where it's headed. I certainly don't think that anyone there would be able to talk to Arin about his life in the same manner, either. It's much smarter to work there, make the connections/get it on your resume, and then move on to something else rather than try and make any kind of positive change. It's pretty clear that Arin doesn't have many/any friends looking out for his life because there have been a several moments where someone should have pulled him aside (any time he crossdresses, shits himself, talks about other men's genitals) and it doesn't seem like that happened.
I don't know everyone from your list, but I would easily say it's the same for Anthony Cumia, Jim Jeffries, and Sargon of Applebees at a minimum (although Jim and Anthony are far more famous than Sargon will ever be).