My suggestion, if you see a potential from a project that provides airdrop, then you should do it. However, the task of airdrop is usually not too heavy. It is very difficult to determine which projects are really potential. In fact, projects like Hamster are very big, and people think that it will provide great benefits, but the current fact is that many people are disappointed. However, a project will not be known whether it will be profitable or not until it actually pays and enters the market. So, when you feel that the project is good enough, then work on the project.
Hamster was too saturated as most of Telegram tap-to-earn projects are, they are all riding the hype of Notcoin's success, and Notcoin was only success because it wasn't saturated.
If you see a millions of users doing something, it's highly likely it won't be worth much.
Yup.. The secret to airdrop hunting these days is, and it's pretty obvious, look for those ones that have a low follower count in Twitter or X or whatever they call themselves these days and low member count in Discord and TG but with a community that's vibrant and active. The devs interacting with the community is def a good sign too. When you have that and you join in, just wait til the project gets some money from the VC's.

And that's your final confirmation that an airdrop is on the way. And by that time people will come in droves but you've already established yourself and have already done all the stuff needed