...except he wasn't. The poster was sharing legal commentary from a Quebec lawyer who has been following the case and summed up the biggest development ("lawsuit against WaPo is happening after all"). The lawyer is not a "third rate, right wing YouTube blowhard going on and on about the piteous plight of some teen-age twerp in a Trump hat."
No matter how you "rate" him, he's not "right wing" and he doesn't go on and on about some "teen-age twerp." It's literally been months since he last talked about Sandmann. He only made another video about it when there was something significant/new to discuss from a legal perspective... and this development was certainly significant news that could benefit from a lawyer's explanation (exactly what his channel exists for).
He's a vlogger who "vLAWgs" about law. Like LegalEagle, he's just a lawyer who publicly provides legal perspective on current events, Twitter trolls, the legality of what we see in movies/TV, and many others. It's literally been months since he talked about Sandmann. Other current events he's talked about since then: Everything from Jussie Smollett to the college admissions scandal to PewDiePie's retracted donation promise to Brexit to Canadian elections to... -well, I have to end this somewhere but the list goes on and on. Point is, more than half his content is legal stuff about YouTube, Facebook, Brexit, and cases in Canada as opposed to US politics. It simply isn't political commentary. It's legal commentary.
Even when he is discussing US politics, it's as legal commentary and not political commentary (Tulsi Gabbard suing Google as the latest example). How anyone could call him a political blow hard is beyond me. One only needs to pick a video at random to know that's not who he is.