YouTube started blocking me because I use an adblocker. So I made this simple Firefox Add-On (haven't made it cross-browser yet, contributions welcome!) to open videos in alternative front-ends (piped.video by default).
Default keybinding: Alt+J to reopen current page in the configured frontend.
Shift+Click to open any video in a new tab in the configured frontend.
You can change the default frontend to something else if you like.
Somewhere along the path, we've made a terrible turn and allowed the browsers to become agents of the web developers instead, gatekeeping on behalf of web sites, rather than serving the user's interests.
My ideal browser would load up a site like YouTube, and, knowing my already-configured preference for ad-free, minimalist layout, would present it as a Craigslist-style list of links with thumbnails, ignoring the mess of JS and CSS that the site's developer futilely sends.