Am I in the wrong here?

I got a message on Growlr from a guy without a profile picture, but his bio is all about hooking up, and his handle is daddy4play.

Aita for not responding back to him even though he just said hello? He messaged me a couple of days later saying fuck you, I finally responded back, saying everything his profile is geared towards hooking up, where is everything in my bio talks about not wanting any of that, so what was the point of starting up a conversation?

He goes on to tell me it’s just common courtesy to respond back when someone says hello and that I’m a Cunt.

And while I don’t disagree with the latter, am I being rude by not saying not interested right away?