A 10 folder tier should be considered as quantity limit, never to be a time limit like in ‘trialware’.
Not sure why and based on which criteria that WP admins decide which plugins to close first. However, HappyFiles is not the only media library folder plugin that has been closed at the moment, there are some others. Looks like the WP admins are tackling one by one?
I have followed the WP authors who make UI/UX-driven products for a while. And actually, FileBird is the first one to commit a drag and drop UI to the repo. HappyFIles is no earlier, not better, nor cheaper.
Just look into their release date of Drag and drop UI — FileBird since 2018-06-15, Premio’s Folders since 2019-02-08 while Happyfiles since 2020-02-04. All of them come with a limit of folder quantity from the release date of drag n drop functionality.
Perhaps other folder plugins will also take turns being reviewed. Anyway, I hope the WP Team is doing this in an attempt to make the community better, not poorer.