Everyone has a different sense of humour. Some find racial and blatantly sexist jokes funny while I personally cringe and snap when I hear them. Sex jokes? Depends on who's delivering and how. Seeing a shape or a company logo that looks like a cock and balls, I'll probably point it out. "Haha, dude, it's a cock!"
Having a sexual sense of humour doesn't make a person immature. That's the same as saying "you have to have the same sense of humour as me and my friends, otherwise you're not funny at all, to anyone." The fact that you don't find those jokes is fine, but it doesn't make you any better - or worse- a human being.
As for whether or not FtMs have the same crude, sexual sense of humour as -some- cisguys, well, that depends. It's the same with chicks, some have a perverted sense of humour and some do not. There are a lot of guys out there who couldn't care less about crude sexual innuendo.