[TrueDuality]

I suspect this isn't going to get major usage. Making it a dedicated API makes these things easier to target by extensions and thus easier to block. There are legitimate usages but almost all of the ones I encounter are marketing call to actions and invasive support chat boxes which are both almost universally hated and would the target of those blocking action.

[megaman821]

You don't think sites will use tooltips and dropdown menus. You are probably confusing these for popups which open new browser windows, popover happen within the webpage when a piece of UI needs to be drawn over existing content.

[codelikeawolf]

When I first read about this API a while back, I thought the same thing. But it's perfect for adding complex controls on top of inputs when you have limited real estate (e.g. clicking on an input with a font name and showing a font picker popover with a preview of the font). This is obviously possible today without this API, but I like that they added something semantic. I regularly have to wade through the ARIA docs to figure out which role/aria- attributes to use.

[seltzered_]

What about selecting an image to view?

[Thorrez]

What about cookie consents?

[lolinder]

Also universally hated and widely blocked.

[TrueDuality]

Very much a anti-pattern. The entire concept of these is malicious compliance against the GDPR and not something that the GDPR requires.

[wizzwizz4]

The ePrivacy directive does require them, though. (Of course, not in the malicious-compliance form we see today.)