>>35888>There's no actual real content there anymore and the mods archive anything that actually promotes discussion.
Here's some lessons in 4chan 101
Archiving happens automatically. If a thread goes to archive that means it was not bumped enough and fell off the board, or it reached its bump limit and therefore could not be bumped anymore, falling off the board. Mods don't archive threads, they can move threads though. This almost never happens because 4chan only has a few mods (compared to hundreds of jannies) and all mods serve all boards.
Jannies are board specific and can delete threads, but not archive or move them. If a thread is deleted, it was probably jannied (but it could also be deleted by OP). Mods only very rarely get involved directly since that's what the army of jannies is for.