I'm not sure what part of Europe he lived in or what he was basing his opinion on. Apparently Germany and Switzerland have the lowest home ownership rates:

https://qz.com/167887/germany-has-one-of-the-worlds-lowest-homeownership-rates/

France appears to have a higher rate of home ownership:

https://englishspeakingrealestateagentsfrance.com/what-percentage-of-french-people-own-property-rent-property/

Eastern Europearn countries have the highest rate of home ownership:

http://www.businessfondue.com/2018/09/07/why-romania-is-a-nation-of-homeowners-while-switzerland-a-nation-of-tenants/

Switzerland is a real outleir. 9 out of 10 people in Geneva rent! http://www.businessfondue.com/2018/09/07/why-romania-is-a-nation-of-homeowners-while-switzerland-a-nation-of-tenants/