A lot of stuff centered around Ash and the early season, with even the one that’s about Ash starting in Kalos and the inevitable betrayal-Ash fic both involved emphasis on how many seasons of adventures he’s already had. Possibly the modern accessibility of shows means that the newest fans coming in are now watching from the start again.
Also, yet another quirky character specializing in something else entirely and who clearly had no interest in pokemon battling somehow changing their mind and becoming a great trainer.