I mever liked him as much as others, I don't really dig his overchoreographed style for some of his signature spots, that require his opponent to stay there watching him do the thing and waiting for him. Once you notice it, you can never unsee it, and it always ruins my inmersion. Other than that, yeah, he's athletic, he's charismatic, and sometimes he knows how to sell to gain sympathy.
I'm currently rewatching Lucha Underground (still on seasons 1, now towards the end) and he's not giving me the vives of one of the very best on the roster like he did ten years ago, but yeah the Graves Consequences remains untouchable. It's more of a Mil Muertes absolutely stellar performance, but Fénix plays his role better than ever.