I mean, does that mean Edge is a Google browser, too?

Yes.

All that to say: while the company that originally created Chromium is bad, the software isn’t.

Only to the extent that websites are built for chromium compatibility, due to its monopoly on the internet. It's great software because it's the most popular software so all other smaller providers that serve that software have to focus their resources into ensuring compatibility. Chromium(Blink) itself is pretty mid, and definitely equal to WebKit or Gecko, not better or significantly worse.