"doing everything they could" is quite the high standard. Personally, I would only hold them to the standard of making a reasonable effort.

Yup, fair. I tried to acknowledge that in my paragraph about KYC in a follow-up edit to one of my earlier comments, but I agree, the language I've been using has been intentionally quite strong, and sometimes misleadingly so (I tend to communicate using strong contrasts between opposites as a way to ensure clarity in my arguments, but reality inevitably lands somewhere in the middle).