Japanese anime is learning too many of worst lessons from American media:

• One short season with a limited number of episodes, followed by a 2-5 year hiatus
• More popular than ever, yet 95% of it is crap
• Constantly chasing trends, like driving isekai into the dirt for the past ten years

Don't get me wrong, there's still a lot of good stuff out there, and some of these bad habits already existed. But, it's more pronounced now.

I don't think we'll ever see another excellent mega-series like Naturo or One Piece or Bleach again. Not when they are going to take long breaks after 10-12 hours of episodes.