Cool, but this article would have been more useful with some practical examples of things Lighthouse doesn't catch. If the point is "this automated metric isn't perfect", no automated metric is but how bad is it exactly?

I still don't have a sense for how bad Lighthouse is because I've never disabled all keyboard events, disabled all mouse events, or changed the high contrast stylings. The article almost makes the opposite point to me -- how bad can Lighthouse be if the only loopholes are things that would pretty obviously have accessibility issues?

The only useful examples I could see were the ones at the bottom of the article, which show up in Lighthouse next to the score.