I think the KYC process has already leveled up. They must have already an idea that such practice among frauds that defeat the objective of the process itself is rampant. As far as my observations are concerned, there are already new mechanisms for KYC that are going to be very hard to cheat on. There are KYC processes that actually require selfies while holding a piece of paper with their signature and date as well as their passport. Some others are even requiring short videos stating their names and other necessary information.
Yes.
I dont think all Exchanges, but also this KYC is fakable