Some funny thoughts to lighten things up:
Considering how Ash is still 10-11, I think it's safe to say the anime has condensed the incidents that happened over a period of around 25 years in the games into more or less a year. Now the inhabitants of the Pokémon anime universe can finally have a break from all the apocalyptic villains and world-ending catastrophes.
Kudos also to Liko and Roy from saving us Spanish speakers from the potential cringe that could result from Ash speaking broken Spanish in the Japanese version. Although... that comes with the possibility that the new protags might not be in Paldea for long, so we'll see. God, I still really wish the new series had been a more straightforward S/V adaptation like the web series were (think
Twilight Wings or
Hisuian Snow) instead of a pseudo-sequel to the original anime. That would have very much saved the mess that were the games.
Not necessarily. Given we have time traveling in all that in pokemon, that doesn't mean everything in Ash's time happened in a year or so. We know from Kanto and Johto, at least a year passed. Then it was never mentioned again until Unova, which was confirmed a soft reboot I believe, And in Kalos it was obvious he was supposed to be older they just didn't mention it.
I know we don't have an official age for the other series. But the writer has said that the Ash in Kalos and the Ash in Alola were not the same Ash. And then we had the movie adaption. These are all different timelines or alternate universes which we know exist in pokemon.
Anyway, to add more to the new girl be Ash's daughter, possibly, I am not saying she is. But she has the hair clip that is the exact same symbol as Ash's Hat.