You also can't blame other users for why they are under KYC. You cannot convert your crypto to fiat without the help of third-party apps services that require your Identity information. We know that people have different purposes when it comes to using crypto. Others consider crypto as a currency as a fiat that they can only say is worth it when it is spent. Not all items can be purchased using crypto due to the limited merchants receiving payments using it. Although online merchants that already adopt crypto are also centralized, you can rarely find a fully decentralized so there is really no other choice but to get KYC to make the most of your crypto.
Did you check what
o_e_l_e_o posted above, you can check it below.
I am very sure bitcoin atm can be used to completely buy or sell without any identity given or noticed. I am not sure of p2p exchanges but with what
o_e_l_e_o explained, there are p2p that do not make use of identity for buying and selling of bitcoin.
As someone who only ever buys and sells bitcoin without linking the trades to my real identity, and refuses to use centralized exchanges or complete KYC at all, it is much easier to trade privately than it was a few years ago. There are more options for buying bitcoin privately than there ever have been before, such as Bisq, Hodl Hodl, LocalCryptos, this forum, direct peer-to-peer trades, some ATMs which don't require KYC, physical shops and vendors, and so on. These kind of services are only becoming more popular as time goes on, as more people wake up and start to realize why their privacy is important. As long as bitcoin exists, there will exist decentralized trading options which cannot be shut down by governments or third parties.