Xempire mandates you to make a TON transaction before you are eligible to airdrop and when I tried to check where the gross approach was heading, I discovered you have to part ways with a whole 0.5 TON, who does that? For what you are not even sure of the price or receive something up to the 0.5 TON's worth? This is pathetic.
Basically, asking money from the airdrop-participant makes no sense for a project. If you want money, go ask it from investors, let them fund you, if you do not get funding, then that's your problem and your project failed. Asking for money from airdrop hunters is like asking for homeless people to give you some cash.
Airdrop hunters are not there because the yare rich investors, they do that because they need the money, and they are willing to exchange their time for money, and asking for their money makes no sense in that case. These projects have no clue about their demographic, if they knew then they wouldn't be able to ask this and think they are smart. Hopefully, not a lot of this type of things gets common in the future.