If you absolutely must use Chromium you can use Brave instead. It doesn't solve the extensions issue discussed here but at least it cuts out most of the Google garbage.
Netflix limits video quality on Firefox although you can trick it with an extension. Then there is the fact that hardware accelerated decoding for Linux/X11 hasn't hit yet.
Anyway one valid solution is to add one or more app shortcuts that effectively run chrome/chromium --app=url and collectively treat these chrome specific apps as such. Instead of opening a new tab just click the icon on your bar.
Or even better, report them to https://webcompat.com