When I started at LSE, I had to do compulsory training on how to teach (I was certified to teach). There were peer evaluations of teaching.

In the US, teaching is often used for key review and promotion decisions, but no-one is required to train or certify.

This is literally one of the only jobs where employers don't offer compulsory training and peer evaluations on one of the key components of work (teaching), leaving most to charisma, luck, and the voluble student sentiment.

Which, of course, only worsens outcomes.

Imagine medics being told "you might want to learn diagnostics, thought it is largely up to you. What matters are your Yelp reviews."

So why are we seeing so many discussions about pedagogy etc during the pandemic? Because we are seeing the massive gulf, void, tectonic rift that was hidden before: pedagogy didn't really matter; what mattered was customer satisfaction.