But yesterday, they announced they are going to sell Bitcoin at a 50% discount to celebrate the halving. Can you imagine? 1 Bitcoin price is 8600 USD, people can buy by 4300$! I believe This is absolutely scam but many newbies already have fallen for that! As they saw MAPC has huge support in twitter, and they listed on CMC too.
50% off announcement: https://t.me/MAP_POB_channel/87
I remember that one. I have to be honest when it comes to airdrops, there are so many that will act in shady ways and there are so many that are worth very little to almost nothing. The important part here is that you didn't fall for the scam and you saw through what they were planning. A airdrop scam often begins with hype (as mentioned in your post) and they use that hype to advertise their scam. Once people send them money, they often don't receive anything in return. It takes many different forms as well, so it's not just "selling cheap bitcoin". There are airdrops that will send you to fake MEW / KYC, airdrops that will ask you to pay a fee to receive your coins, and some that will promise silly things like to double your eth / btc by sending them eth / btc first.
Make sure to be careful out there when pursuing airdrops.