Why stopped there? Why not you also banned every western games, website, and social medias? Because all of them were no different from Chinese games, where they also extract your data and credentials without your consent, and they then “sold” it to other party.
Remember, the Cambridge Analytica fiasco happened, which coming from Facebook of all people, and still felt by them until this day. And if you look at the list of GDPR violators, you can see lots of famous western companies/sites that were fined due to data breaching and other violations. Twitter is the latest one, where they were fined because of data breach that happened in January 2019, and failed to notify to the regulators in time.