I prefer not doing KYC for any reason. I have to measure everything and only if I find that it is in my interests I proceed with KYC. Otherwise I won't bother with any website to sent them my details and documents.
I was playing in Pokerstars from 2009-2015 and FTP until 2011. Never did KYC and never sent them my ID. Suddenly around 2017 they started asking for documentation. There were other places available so I left. The main reason though, was that I stopped profiting from their games. If the same good games from 2009-2011 were available then I would have sent them my ID and any information asked.