I looked up 'men sexting online dating' and there are lots of threads about it. Women saying they don't like it when men send sexual messages right away, men defending it, generally. Or angry 'nice guys' who think that women owe them favours for asking about their lives.

One female commenter said 'they are using it like live porn', which is upsetting.

More than one man claims that the conversation gets boring without some sexual content. Moreover, that women get bored.
But... there are lots of things to talk about. Getting to know what someone is about isn't boring.

Dick pics are boring. 'Your hot' is boring.
All sex talk seems about the same to me, and women online get inundated with it.

Anyways, it is just super weird to me that anyone would go for that kind of approach.