I think it's fair to have an opinion on what should and shouldn't be normalized, such as excessive promiscuity if that's your issue. I think it's also fine to simply think of whatever you want a weird or even wrong if it doesn't align with what you're into anymore. I would also say they should be specific, and cast a narrow net if at all.

But there's a difference between that, and sort of implying that it's something to be suppressed, especially on the basis of it being hedonistic. Everyone has something they're into, maybe it's sexual maybe it's not, and it's perfectly fine to look back with disgust at the thing you were once into. But really, I find it very hard to look at at least North American and some modern Asian societal culture as anything but wildly more hedonistic than a sex fetish that's a bit bizarre to most people already.

Maybe my tone was a little judgemental in my initial comment, but not inaccurate based on your followup. Would I discourage people from making the same mistakes I've made, I guess ya sure, but I'd try and be more specific about things like "Well ya when I was younger I dressed up like a cat and fucked strangers every weekend, but at some point it's good to develop slightly more meaningful romantic connections with people, and the whole furry thing seemed a bit childish in my thirties" or whatever. Because everyone has a different comfort level with their own sexuality and others', it always rubs me the wrong way when anyone says something "we don't want x leaking into reality", but the reality is that everyone's got some different thing they're into.