The Alt-Right has been better at using the internet than the right-wing had been in the past, that is true. I do think it is just the natural progression of things though. They tend to be a bit behind the times but their base has enough of a younger crowd now that this shouldn't be a surprise.
I can't say that I care though. Everyone should have a right to speak their mind. If they say something you don't like then defeat their ideas with better ones.