There's an extension called "Redirector" which can pretty easily redirect links to Youtube videos to an Invidious instance of your choice instead with a rule like .*youtube.com/watch?v=(.*) -> https://invidious.flokinet.to/watch?v=$1 (set it to pattern type "regular expression" if you use that one.)
It's strange that the Invidious UI is so much better, but until Google improves their version I feel justified in doing this.
Hey guys, I am sitting on the #PeerTube (#Federated#YouTube) domain peertube.science - I want to gauge how much of an interest in this for me to set up. Is there anyone interested in a non commercial video service like this for the sciences? Humanities are welcome too. :)