I'll give my two cents.
Arin is a bitch. He isn't fun. I remember watching a bit of Oney's Uncharted 4 let's play with him and Arin was cringy non stop. You could even sense Arin cutting himself short regarding the jokes fearing he would say something too controversial that could be taken out of context by his "tolerant" and "open mind" community that follow him and feed him sjw propaganda, including his alien wife.
The way he treats gamegrumps with zero passion, with zero soul, a business, something to shameless make money from dumb kids and rabid followers, shows how much he doesn't really care about what he is doing and his "joyful" personality is just a charade.
His new "career" as a voice actor really pushed his ego to another whole new level to the point, he now sees himself as a hollywood superstar.
Also he has shit tastes. His OoT bashing video is nothing but a way for him to generate clicks, controversy and place him as a "bad boy thinker" cause he said something the masses disagree. He is fake, he is unfunny, even with his internet mask it is easy to see his hypocrisy, double standards and shit personality.
Speaking of Oney. Apparently, one of the reasons why his co hosts (julian and ding dong) left the channel for such a long time was because they got apparently shit from Arin and his internet mafia, cause julian and ding dong shat non stop on that game developed by Arin (Showering With Your Dad or whatever it was called) and Arin didn't like it.
Oney probably not wanting to break relations with both sides probably tried to encourage julian and ding dong to make amends with Arin which probably wasn't something Julian and ding dong wanted to do.