My only gripe is how they come off as raving fanatics. The bigger picture is what actually counts and what I think they do a good job of bringing to light. I doubt the general public has seen some of the things they've exposed (fur market for example, that's something I was actually beyond shocked about when I actually saw videos of of animals being skinned alive and just tossed in a pile).
However, there have been times where I just shake my head. I've seen a few times where they bring up the topic of horses and how they're "mistreated" in law enforcement or in general how supposedly riding horseback is a bad thing in general... that to me is just a "what the fuck are you talking about" moment.
They're raving fanatics some of them, but the bigger picture and principle they represent is what matters and they do a good job of that.