This is needed, TIL but only till recently did Firefox remove their bookmarks limit, it was something like 6000 about 3 years ago.

(For those curious about why one needs so many bookmarks, similar to maybe some other people, I use the bookmark feature as a "like" to save articles/URLs I find interesting).

Same, I have many folders with subfolders of related stuff, and on top, I have "sessions" as well, and lots of notes (Vivaldi).