Many ico are starting requesting KYC also to Bounty hunters even if the revenue generated is not a pure investment.
I don't understand this logic.

Many projects, which wasn't scam, fall down after ICO.
it is not about all ICO projects...
So, some ICO need KYC, and, i really understand, how ICO can be hard for people, who creating this project.
So, maybe, they have only one achievement - going to ICO.
They haven't achievement - developing their project.
And, when they going to ICO, they thought, that they achieve their goal.

i don't think this section belong to bitcoin discussion section since it talk about ICO not about bitcoin i suggest that you should move this to altcoin discussion section. Although since you brought this up, the answer is ICOs especially in america required that their investors are required to do an identity verification since it was ordered by SEC in america to prevent fraud or money laundering. i don't know they do this in other countries too.

there are a lot of ways for making money one method is to steal other people's identity and documents and sell it on the dark market. these ICOs are currently gathering cryptocurrency users information and creating a database from them which then they will sell elsewhere and make some money from doing so.

It is because the parent companies need to show where they obtained their funds from and verify its not come from illegal activities.  Once listed that burden technically shifts to the exchanges, or individuals to be responsible.