The idea that a large company has ever "leaned left" in any real sense is a bit ridiculous.

I would argue that Twitter pre-acquisiton had elements of inferiority-complex-driven-correct-isms and tryhard leftism. Not necessarily that I disagree with that biasing especially with what happened to it since. Their intents back then were 120% innocent, just occasionally un-ideal as nothing ever is perfect.

What is left? Your definition might be very different than the majority.