I don't know what you mean by "poster." This guy has a YouTube channel and a rather large following. I personally believe it's better to know who is out there claiming to be a spokesperson for a group I identify with (else, why are we even on this website?), and to share that information with others. If you don't want to look at or read anything about it, that's your business, no one is compelling you to do so.

@Condor5 I watched the video, it was all about the sign, the poster and he went line by line through it and as I stated "Unloading on it sardonically trying to interpret it is as absurd as the poster's simplistic notions." I assume you did watch the video?