So is this what Mozilla meant when they announced a privacy push back in February

https://fortune.com/2024/02/08/mozilla-firefox-ceo-laura-chambers-mitchell-baker-leadership-transition/

How’s it compare to greenshot?

It depends. It will not affect many of them until 2025 when enterprise support for v2 ends and by then other arrangements and fixes might be. Brave in particular I would not worry yet.