I think it could be because it's coming bundled with lot of additional tools such as Reality Composer , Create ML etc so looks like it's only going to increase in size.
suyashjoshi
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
User for
From
San Francisco, CA, United States
Post
Replies
Boosts
Views
Activity
Start with RealityKit2 https://developer.apple.com/augmented-reality/realitykit/ . There is a session in WWDC 2021 about it that you may want to attend.