Thread bloat: something everyone can do
Most of the fixes for thread bloat involve extra work for the mods and their masters.
One simple thing *everyone* can do is to ignore idiotic, uninformed or tasteless posts. Trust the mods to eliminate them and don't waste space commenting.
And for the PPrune Masters, one more complex option not yet proposed is to require mod approval for all posts in the serious forums, but once you have had a post approved by a mod you are granted direct posting rights, which you lose the minute a mod deletes one of your posts. This would not slow down serious posters but still allow outsiders a chance.