[imbnwa]

>For work, the Mac I am using is way more powerful, and yet I find strange issues. Vivaldi dies if I open more than 60-70 tabs at once but it doesn't even really matter, because all the Chromium based browsers that have said "don't worry, we will keep maintaining Manifest V2" feel like they are on a "danger zone" to me.

WRT ad blocking, any serious Chromium-based browser that has vowed continued V2 support already has a performant ad blocker in its native code to cover their ass on this point you're making here (see: Brave; though also Orion, of the ones that I know, which is a Webkit browser). Of course, effective dynamic ad blocking isn't the only thing lost with Manifest V3 but definitely the most noticeable.