I've seen or heard someone once imply Phil might be a porn addict and it kind of makes sense. He's beating it all the time so he has zero attraction to Khet, and therefore doesn't mind that she's obese. Even better, she won't go anywhere. He might be gay or bisexual, but I don't think he feels strongly either way. Just rubs one out whenever he feels mildly horny and moves on. It's just a mechanical thing for him. Avoiding women on stream is perhaps so he doesn't start feeling uncomfortable or horny.
Remember, "Old Phil" was all about rape, taking virginity, fucking in the ass. Every woman in a game was an object to be fucked, raped, or get naked, and every guy is all about ass and cocks.
People like that, when they're like that in their late 20s - early 30s don't change. He will always be like this and he is like this now.
He just knows that he can't get away with it.
It's an interesting theory, but I think the simpler answer is that, like with many things in his life, Phil was just emulating the style of others. When Phil was first getting started, the "angry reviewer" personality was a lot more prevalent on YouTube, AVGN and some of the Channel Awesome crew being prime examples. And even before that, shock jocks were a thing, and we know how much Phil enjoyed Howard Stern.
While that style still exists today, it's greatly toned down because it isn't advertiser friendly. In the early YouTube/streaming days, views were really all that mattered and content was less relevant. There's significantly more standards now for advertisers and monetization in general, as well as what material will even show up in search results in general.
I genuinely think Phil is still too stupid to understand how these guidelines work/streaming culture in general, but he's probably picked up little hints here and there on Twitter, and he at least knows a common issue with him is how immature he is. To give him the tiniest crumbs of credit, I think he recognized that there was an issue and tried to fix it, but because he's Phil and doesn't understand anything and lack critical thinking, he completely misidentified the issue. That's why he can claim his content is so much more mature and chill because he doesn't talk about fucking women, while at the same time telling viewers to eat the shit out of his ass with a spoon.
It's basically like if someone at YouTube told Phil he needed to stop calling his viewers morons or he'd lose monetization. Phil would eventually break that habit...by just calling his viewers idiots, dumbasses "mouth droolers" etc. He doesn't understand that maturity isn't a checklist where you have to hit X items to be mature.
It's possible Phil went through a Derich phase, but I dunno, he's always seemed like he's pretty low energy when it comes to, well, anything. The best argument for it is he clearly has an addictive personality, so...it's not impossible, maybe that filled the void of gacha games before he discovered them, but it just doesn't really feel like Phil.