I understand your statement, and YNH really looks like scam but sometimes it's just a matter of weighing things up.

In my personal opinion you do not need to disclose private data, you only have to join two telegram groups and provide your ETH Wallet Public Address.

For example, I have a second telegram account for such " possible airdrops". That's what I mean by a matter of consideration, as soon as you have to enter private data I investigate more closely.

That's why YNH is on the list. Most Airdrops are not the same as ICOs.