From my own experience I can tell from all the airdrops that I know the top projects were only: Vite, Ontlogy, Dfinity. All others were shitcoins

Most definitely yes, because they just want to have more people holding their coins that's why they give airdrops. Anyways, I don't give a damn about those airdrops because I don't join any of it and only do bounty hunting on bounty campaigns to earn tokens.