AJ doesn't promote lizard people. Maybe David Icke still does... I never followed Icke but I've heard him mention "aliens" and "lizard people".
I like Icke; he's spot on about nearly everything, except the lizard people ... but, even with those, the way he describes them, as interdimensional beings, makes it sound like they're demons, and I have no issues with that. I do believe that demons will manifest themselves more and more in the corporeal world. My biggest issue with Icke has to do with the "presence" or "voices" he heard that ended up being his guide.
Icke was one of the first people all over the plandemic, describing in great detail what their intent was, when most of even the conspiracy theorists believed it was realy (in the very early stages).
So, in addition to gatekeepers and controlled opposition, there's another category that I call the "kookifiers", where they speak 98% truth, but then throw in something really bizarre and outlandish, which then by juxtaposition serves to discredit everything else they speak about, i.e. the truth. In addition to Icke, there's Hal Tuner (who had his e-mails hacked, and those revealed that he was in contact with the FBI), Jeff Rense, who juxtaposes sold truth, especially anti-Zionist stuff, with some bizarre nonsense like "the intelligence of plants," and Benjamin Fulford. Here's the thing about these guys, though; they have a lot of good information and are worth listening to if you can see through their agenda and not get sucked in.