The fact that this new crypto mining innovation through telegram happens to be free is what's making it trend that much with many people getting interested to participate without even investigating to know about the source of these projects and their mission. Fair enough some others have been scammed of their funds by the request of conditional deposit of a certain amount of USDT for transfer fee eligibility to withdraw token only to eventually discover that they have been played a fast one on.
Very beginner mistake, to be honest. I never continue to pursue an airdrop that requires you to deposit some fund first before they give it to you. It is so obvious that the developers are just trying to make money out of everyone and not really serious about making the coin useful.
I would understand if an airdrop required some tasks but money? Forget about it.