70% of crypto exchanges allow trading and withdrawal without any verifications, you just have to do research on them is all, here are few ones I used with no KYC needed ..
first of all any centralized platform, specially those that have a KYC rule, can force any user to submit it at any time by closing their accounts and freezing their funds. it doesn't matter if they have a rule that says "no KYC if blank", they can change it at any time if they liked. and they have all done that in the past.
secondly most of such services don't let you connect using Tor or through any other privacy enhancing way which means you won't be anonymous (which is what OP wants).
and finally some of the services you listed have changed and are now forcing KYC to all.