Do some Muslims not believe dajjal exists and why?

I was reading a post about dajjal with a few people commenting they didn’t believe in him. Other people also agreed and said they didn’t either.Obviously there are going to be Muslims who believe in one thing and not the other. But dajjal? He’s one of the last signs!

Edit: as a side note, from what I’ve read, dajjal sounds like he’s going to be a tech billionaire.