Here's something I'm still unclear on: how strongly were owners warned about this beforehand?

If Tesla cars come with a bright red warning on the driver's side window saying IF YOU DO NOT KEEP THIS CAR CHARGED THEN YOU RUN THE RISK OF REPAIRS COSTING UP TO $40,000 then I'd say Tesla is completely in the right here.

If they didn't mention this anywhere and it's just something owners discover because they use it in a way that Tesla didn't think they should, then Tesla is completely in the wrong.

If they did something in between, then it's in between. I may have missed it, but so far I haven't seen this explained.