The feeling is mutual but I guess you aren't taking consideration of what some of this airdrop or giveaway events entails Actually, some aren't meant for all participants while other do. You have to watch out for keywords like 'lucky winners' such events are primarily for lucky ones via probably a lucky draw or random selection.
On the contrary I have a very good experience with airdrop and giveaway event on exchanges and projects. Coredao and Blur was the recent I productively participated
