We do not require KYC if the player does not violate the rules, we can request KYC if the player is suspected of cheating , betting on contractual matches, multi-accounting
The point is, you will still ask for someone to verify at any one point due to "suspicious activity". This is a gray area. Anyone can be suspicious until proven otherwise. Even someone who has not broken any rules can be suspicious.
NO KYC simply means no one will ever be asked KYC, suspicious or not suspicious. There is no in between.