Some men are not in tune with their deeper selves. If they get their orgasm, that is basically what matters to them. When he said this: "how patient he'll be until I'm ready for sex with him" -- if you look carefully at that, he is assuming that there will be sex with him.

But do most people have sex with every person they date? Probably not. So is the website you found him on geared towards sex? Or is it genuinely a dating website where people can find nice people to date and maybe have a nice relationship with someone that might lead to a long term relationship?

If the website is thought of as primarily hookups then his expectation, no matter how shallow, is understandable.

If however it is genuinely a platform for people to meet each other for honest relationships--consider you dodged a bullet.