[2022] Do workbenches, sinks, cement sacks and other items respawn after you destroy them ?

Objects actively REMOVED from the game world will not naturally respawn. This includes but is not limited to workbenches, sinks, tarp bags full of cobblestone rocks, bird nests, cars, trucks, brass fixtures, doors, etc, etc, etc.

If you break it or salvage it, It is gone. The only way for any object removed to respawn is to get a quest at the location, which will refresh the POI so the quest is possible.