But why don't you find those beautiful airdrops once, whose only request was to communicate an address to receive the gift?

We all missed those times, good old times indeed, when working in this industry was that so toxic unlike nowadays. I missed those times when we could easily point out which projects are scams and very few are greedy enough to create bogus projects that have ruined the reputation that this community have establsihed. I hope we could bring it back someday. But before that, we really need a way to regulate those scams without sacrificing the decentralized feature of crypto.
I totally agree with what you say, that the reality today is a lot of fake projects and just looking for a momentary profit. neglecting to make a good project and can produce something good for all who participate in the project.
I think there must be cooperation so that crypto can be excited to minimize the presence of many fake projects, which actually makes crypto not excited.