The difference between youtube and dtube is that dtube is decentralized, and everyone who has a stake in steem has a voice on dtube. If people come here with tons of negativity and grabage people have the ability to flag that, downvote them, and let them know we don't like that type of stuff. Or we can not do that and let them know they are welcome to use their voice here as well. It's an open platform. But I'll just let you know, I found Steemit from a youtuber, it was my introduction to all things cryptocurrency and I am SUPER glad that it happened. I would say go for it when you feel the time is right :)