I agree. I've heard more and more children are learning about sex by watching porn -- and at younger and younger ages. My neighbor, who has six kids, says that the average age for a child to be exposed to porn is age 8. She says it's a really hard time to raise children.
Perhaps porn has its place among consenting adults (not my thing, but whatever). But it was never intended to be, and should NOT be a stand-in for sex ed. Especially not among children. Porn carries a lot of misconceptions around sex and consensual and healthy sexual partnership. I agree it could be influencing the Incel movement as well, in that it might create unrealistic expectations about sex for men and then men might get angry when sex isn't that way, or when it isn't as readily available as they were led to believe and isn't as male-centered as they were led to believe. Not to mention when finding an actual female partner requires, you know, being dateable and having decent hygiene and decent social skills, and the skills to be a giving partner and eventually, possibly a good father. Porn can lead men to believe that they are entitled to the payoff and shouldn't have to work on it.
A lot of our mainstream entertainment industry --not to mention Playboy, Maxim, and (I presume) porn -- is based around selling mediocre men the myth that they deserve to be dating a supermodel. Some become bitterly disappointed when that does not match their reality. But from what I've seen, some might not be so lonely if they got over the idea that the only women worth dating are the ones that look like the women they see in porn or magazines.