For a while now the transition away from Manifest V2 (MV2) to MV3 has been on-going and it looks like it is entering its final phase of deprecation, at least, in the case of Google Chrome. A recent discussion thread in the w3c WebExtensions Community Group GitHub repo has highlighted how the latest and upcoming versions of the most popular browser are expected to be its final releases with support for MV2 extensions.
What this essentially means is that the tricks and bypasses that were used to keep MV2 extensions like uBlock Origin and others alive will not work any more on Chrome, or at least not for very long. For example the Windows Registry mod that could extend MV2 availability will cease to function after Chromium version 151.
My real issue is as a dev of a web application, using Firefox makes things occasionally render differently. It’s only once in a blue moon but enough to make me just accept using Vivaldi to be closer to the defacto user experience. And then I can’t be bothered to switch between FF (I use Zen) and Vivaldi and split my bookmarks, extensions, logins etc. it just doesn’t make sense.