I've found it to be very inconsistent. I've found that typically episodes will play credits and not auto-forward to the next episode. Movies will sometimes skip credits and move to trailers, sometimes not. I feel like usually they move to trailers. And movies is when I MOST want to watch credits and reflect on the movie, so Netflix is literally doing the opposite of what I want.

Not really.

You can turn off auto-skipping to next episode, but depending on the platform you are watching on, it might still autopay trailers after a movie has finished.