But are there any centralized exchanges left which allow you to trade between fiat and bitcoin or vice versa without KYC?
Obviously not, didn't even think about it, lol. But managing to purchase BTC using fiat without KYC is I believe so much easier than switching in between alts is (excluding tokens on the same chain).. at least in Europe. In Romania, purchasing BTC is as easy as going to a local ATM. Same for selling, excluding the fact that they take a quite large % of your amount. So if you can get to own a Bitcoin, trade it
and sell it without KYC, why bother verifying at all? I know some people who've verified their accounts although they trade under $2k a month.. this is called just giving away your personal info without a reason for it!