Sounds like the person you’re married to is kind of a dick, honestly. Thinking less of other people for not understanding your own unclear language just shows a massive lack of introspection. As a local autism, though, I definitely disagree with the last point, as a significant difference between someone who has autism and someone who doesn’t is that language is understood differently (I would know), and that means you can both understand and be understood incorrectly very easily. This post is kind of deliberately divisive anyway, but I believe the point of saying something and being misunderstood, despite your best efforts (hopefully), still stands.
I really don’t see how supporting Manifest V3 is a problem. It’s still going to be used by many extension developers, and there’s no harm in its availability as long as you can still block WebRequest, which is currently the case. On the Mozilla taking Google’s money point, sure, that’s true, but it doesn’t seem to have affected too much of the browser, other than search defaults abd a few other things that can be very easily turned off or removed entirely. I wouldn’t say the chances are particularly high for Manifest V2 to be completely removed, personally.