My concern of being leak are more related to the second leaker posting right in between the second leaker's timeline, when he should have had those Pokèmon already before. All of his three posts come out after the first leaker.
I think the first leaker posted the fox, so it should be legit.
Same. Like I won't miss that Grookey one, but I had warmed up to that Sobble one for sure. Looked like a sassy, confident lizard who grew up from our sad friend. I really liked it.
Nope, the first leaker didn't post Meowth's evo and the final stages for the starters, because he still didn't evolve Grookey in the final stage.
A pokemon with character development? Yes!
I don't think the people that have problems with Intelleon is because of personality. Basically everyone expected Sobble to grow more confident in the final stage. It's a pure aesthetic, subjective, preference.
The first leaker posted shots from locations we didn't see in the trailers, or not in those angles. It'd be really, really unlikely for them to be fake.
What is pointing to this leak being real is more how much the leaker has, and the timing of the leak. I'm pretty sure big gaming stores, like Gamestop, recently got their physical copies in, and we often see people who get a hold of the game through underpaid employees deciding they would risk their job for a good price. There was also a lot of Pokemon included in the leak, in different backgrounds and locations that we haven't seen yet. Yes, that could have been faked, but that would have been ALOT of work to fake it. We're talking at least a few weeks.
The Pokèmon that should be pretty 'safe' are the middle evo, Galarian Meowth, the two foxes, the purple frog, Galarian Farfetch's and the elephant.
That was, in my opinion, a superficial thing to state. As if in the real world we don't become friends or get in relationships with people with different personalities of our own, or if we get mad if we found that our pets don't match our personality (like an active dog with a lazy owner, or a lazy dog with an active owner).
