Although at the moment you guys can't get much money from a single airdrop like before but I think you guys still should join airdrop if have free time cause to join an airdrop, it'll not take too much time and you guys often no need to do anything so I think it's fine if you guys just spend few minutes to earn few dollars.
If we have time then its still good to try, we never know unless we registered if they will pay or not. Mostly they not but who knows if they are companies who are really good to their words.