in fact the request of kyc is quite an inverted request for this world. everyone who invests wants to stay anonymous. on the other hand, the project teams want to know the source of the money that came to them.
in some projects, many people have invested wasted due to the economic crisis, they could not get it
But it's even against the rules of the crypto currency, against all the point and sense of it. It's always about anonymous when we're mentioning crypto coins. Why else does we need a crypto currency? Nope, KYC is a weird crusade against the whole crypto world.
If you dont want to do KYC, you dont get into new ICO thats all. You can carry on using established cryptocurrencies.
The reason they do this is their bank will want to see the source of funds and that they've done KYC. Now technically its not needed for smaller amounts (under 5k in EU i believe) but its simply easier for them to apply to all, ensure they are safe from having their bank accounts frozen due to non-compliance.