Does it? Has the browser extension landscape changed significantly since then?

It's just a Hacker News convention to include the year in parentheses if the article isn't freshly published. It doesn't have anything to do with the content of the article itself.

Sure, but it's generally only done when that added context is important. I think this article could easily have been written yesterday.

Whatever happened to manifest v3?

mv3 is already referenced in the article (second link), but it's still not mandated yet.

Wow, I didn't realize that's been discussed since 2019. Talk about boiling a frog...