Please show me legal info from at least one of the exchangers. You won't find it on their websites. So it's completely different. They aren't legal registered companies, they work anonymously. So they don't have authority to ask for KYC.
From what I've seen in similar cases, many of those exchangers don't own any funds. They use third parties (such as Binance) to process transactions, and if that third party freezes funds, they do the same. The use of third parties isn't explained on their website, they pretend to have their own funds.
I'm okay with fully registered exchanges that require full KYC. I'm also okay with completely anonymous exchanges that don't ask anything.
What's not okay, is anonymous exchanges that ask for personal documents. They can easily use it for identity theft, and you have no idea who they are.
I wonder if it is even possible to provide this type of exchanger service without registering a company (of any kind, even if it was offshore).
for every fiat exchange, a bank is required. can the whole business be done as a physical person (no company) and do banks tolerate such things?