Why JN like to cram something important to one episode ( first IRis return now this) while gave filler 2 episode on between
I have to agree, partially at least. I think Iris' episode didn't feel
that rushed all things considered. Only thing we didn't get was a more detailed explanation as to how she became a Champion. But they probably didn't bother to think of one in the first place.
But I definitely agree that I don't see the point in cramming so much stuff in one episode, like this one with Oak's lab+reserves+Infernape+Gary+Moltres+Project Mew. While this episode is literally surrounded by filler episodes.
Like, I know Pokemon has always had filler episodes, but when important stuff happened, they usually dedicated a few episodes to that plot, before going back to fillers.
Now it just seems like the important episodes are breaks between fillers, not the other way around.
Why are they battling Moltress anyway?
Same reason they battled Lugia, Zapdos and try to battle any legendary pokemon they see. Ash wants to test his strength against them, and Go wants to try and catch it. Gary's reason remains to be seen though.
And that's a trash reason, especially in an era where the internet is dominant over TV and the Anipoke YT channel themselves uploading each episode to their channel (albeit region locked).
Also we had a 4 parter with the Galar arc, so there's no excuse for not having more plots that stretch over more than one episode.