I heard when he said he was on TRT, my comment was about TREN, which he said he would never do again based upon how it made him feel, negative physical effects as well as it is a hormone for animals not humans.
I don't see him as an idiot or loudmouth (in the dumb sense), yes he has the Gilbert Gottfried thing going on, but his info is GREAT!!!!
I can't watch it since I could only take 5 seconds of the other video you posted.
But from what you said here I can almost guarantee he is full of shit. First, it doesn't matter if it was mostly marketed for animals, doesn't necessarily say anything at all about its utility in humans. Lots of reasons for why it was only a human drug in France which do not necessarily have anything to do with safety or whatever.
Yes it's harsh, yes it fucks with your mind. But it's so effective that guys will reach for it despite all the sides when they feel the need to look their best, for example when this fella sits in a tank top screaming on youtube

You say he's on 140mg TRT? Sure, he's seen that this type of HRT is popular now so that's what he's claiming. Soon he will talk about 10mg of test a day. He may even do exactly that for a period. But the thing is, merely good or healthy is not good enough, you want great results and 140mg ain't gonna cut it.
Tren disrupts your hormone system? Who cares, this guy is never getting off steroids so it doesn't matter.