Yes, this is how he overcorrects. Back during Classic Phil as soon as a woman character appears on screen he'd immediately get "COME HERE BABY GIMME A KISS ACK ACK ACK COME ON WHIP THEM TITTIES OUT ACK ACK GIMME A BLOWJOB ACK ACK ACK". Now he thinks that the Mature Adult(tm) thing to do is to be more puritan than even the biggest sexual puritans, or how we say in my country "more Christian than Jesus himself". Kissing, hugging, flirting, any display of romantic affection no matter how minor is now as bad as displaying an extreme snuff pedo eyes-wide-shut BDSM orgy in his eyes. That's why even something non-sexual like breastfeeding is now something sexualized, just because a bare titty is shown.
Lastly, I don't think he genuinely cares about a bare titty being whipped out to feed a baby, this is all a circus act to showcase how he "matured". As they say in Phil's sweaty musclebound shirtless world, it's all just kayfabe. He's just so much of a hermit he doesn't know what maturity is which is why we get these overcompensating clown shows now.