Turn off WHOIS
With GDPR and the stupidity of ICANN, the only reasonable alternative for registrars in europe is to turn off WHOIS - cut the data feed or replace the data with dummy lines saying "Removed due to GDPR". If ICANN complains then inform them that laws trump their contracts.
(If a WHOIS service uses cached data rather than the dummy data, the service would be the liable party - not the registrar.)
Biting the hand that feeds IT
