This was a video walkthrough of the browser from a while back. I agree the communication on the github and website page need to improve a lot.
I basically do this already with Firefox and TreeStyleTabs (but ad-hoc). Any middle mouse/ctrl+click I do on a link, opens in a new tab nested under the current one. So all HN stuff is under one tab that is collapsed, all GitHub stuff is under one and so one. Really effective when you do research, as you can do the initial search on Google, then every result you open goes under the existing tab, which is conveniently labeled via the <title> tag on the Google page.
https://www.businessinsider.com/how-to-organize-tabs-in-safa...
It may help improve some tasks, but not exactly core product stuff.
If my capital were on the line, I’d be pretty annoyed seeing it spent that way.
I think you'll find you get a lot of mileage out of taking those particular glasses off from time to time.