Yeah I can see that, though most of his criticism isn't entirely unjustified, just much harsher than I would tend to be.Never is hard critical on people at first glance, so you can take what he says with some pinches of salt at times.
For example I can see why he finds Lyra Valkyria to be boring from a character perspective. I just look at it more from a perspective of she's pretty fucking young and has enough time to come up with a character later. Hell I would say that it's right there in the "thinks she's The Morrigan" thing, I would just suggest to play into that a lot more.
As for Thunder Rosa, I don't know what went wrong in her title reign so I can't say if it was genuinely her fault or just the booking but if it was that bad, I can see why he doesn't like her. I'm just basing her on what I've seen and what I've seen is fine and she seems to still be over (which is the only reason I think she even gets TV time at this point) so I wouldn't mind seeing her in WWE.
At least he's not the AEW-stans where the mere fact that Harley Cameron is not absolutely amazing in the ring (she's not terrible by any means, just not great 'cause she's still learning), justified her not beating Mercedes at Grand Slam Austrailia despite being one of the most over women in the company lately.