Specific airdrops might have their specific problems but in general airdrops are often scamming their participants after collecting some sort of personal data from them in the first place. It is the cost of being greedy for the so-called "free money". While you could get some legit coins through airdrops who were running properly, you are less likely to find such projects nowadays.

Be on the lookout to make money but if it is given for free, be careful that you dont end up giving away your own data to such an extent that might get you into trouble. Because there are loads of low income country users in this forum who just want to accumulate shitcoins hoping for something big, they easily get fooled by such airdrops.