So, as a former fan of Game Grumps, I've just gotta say, everyone involved in this situation is a piece of shit, not so much because their actions were illegal or anything, but because they're raging hypocrites.
Dan had the reputation as the "nice guy", with even anti-Grump places like r/ConspiracyGrumps defending him as "the last good thing on the show". He also would talk on and on about how "You have to treat your woman right" etc but while also talking about his sexual proclivities. So it's no shocker that he's a raging sexaholic who pumps and dumps groupies half his age. Everything in his actual character points to that. But this fundamentally conflicts with his "nice guy" persona.
Then there are all of the fans involved. So much of the current fanbase are teen and tween girls who regularly buy into "woke" culture and deem anything and everything as "problematic" and "racist" (saw a fan complaint about the Dan situation bringing up "Arin's problematic, racist past" as if this wasn't already known for his 15 year online presences...?) and see this as "grooming" (everything is grooming nowadays). The fact of the matter is is that Dan consensually had sex with adults. Even from some accounts from people he supposedly "abused", he never once claimed he wanted a monogamous relationship and she finally left the relationship when she demanded that. Dan was very up front with how much he was fucking around with multiple people. So these people just need to admit that they're star fuckers who are angry they're not as special as they thought they were since they're just one in a harem.
So yeah, I ultimately hope this leads to Game Grumps' demise, but these are the same people who distanced themselves from JonTron for "racism" while keeping their editor who had known sexual contact with a 14-year-old girl