leftist != Liberal. And the EU leftists aren't liberal in any real way. That's why terms like left and right don't mean anything outside of a specific place and time and even then, its just shorthand. If they were liberal, none of this would be happening.
Being liberal is hard but saying you are liberal is a great way to hide socialist and authoritarian tendencies. And that's the problem. If they were actually liberal, they wouldn't be censoring the Internet. Liberals believe in free speech, socialists don't. Its a big tell as which kind of leftist you are.