No, the problem is controversy. Spewing bullshit on Twitter and gloating at "idiots", isn't going to solve anything. The person that talked about "white genocide" is a professor I believe, so he is supposed to be a bit smarter than the ones who he likes to call "idiots" yet falls into the same trap as them, with his excessive, divisive rhetoric that gets him brownie point on Twitter, but that's about it.
What you don't get is that you're not going to build bridges and inform people on these various subjects if the first thing you do is antagonize them. He is absolutely part of the problem. He didn't need to say that, it's genuinely offensive and gratuitous. You can talk about context all you want, don't expect context on social media, there is none, his comment was heard by the entire planet, and in European countries that suffered greatly from genocidal attempts like Bosnia,Ukraine and others. Go tell an Bosnian 'your genocide is less important than what happened to black people'.