[ljm]

My running hypothesis on this is that AI is a sentient screenreader and the last thing you should be worrying about is CSS class names, IDs, data-testid attributes, DOM traversal, and all of these things that are essentially querying the 'internal state' of a page. Classes, IDs, data attributes, etc. aren't a public API and semantic elements, ARIA attributes, etc. are.

So, focus on WCAG compliance, following the spec as faithfully as you can. The style or presentation of something may change as part of a simple A/B test but the underlying purpose or behaviour would remain the same.

[runlaszlorun]

This might be the last of the weed talking but that's rich. I'm gonna have to chew on that.

And maybe even crack the WCAG docs. Wait... It's a trap...