we had porn for decades and there was no problems

Porn has existed as long as art. But easy access to any kind of hardcore pornography imaginable at the push of a button, shame-free? Sure it's been a couple "decades", which means middle aged men like him were among the first generation to have that access, and the next generation after him (20s and younger) are the first group generally watching it from childhood. Pornhub is "mainstream" now. I don't have much of a problem with porn, but you can't deny it having an effect on society. The jury is still out on what, exactly. Nothing to do with the other guy's comment though, not sure why you went there. (Yes there can be a causal link between porn viewing and fetishes, but that isn't always the case and wasn't brought up.)