I remembered GNOME Web has had web extensions support in development for some time, and enabled it…
Unfortunately the two extensions I’d most love (Bitwarden and Dark Reader) are not working for me in stable, tech preview, or canary. :( It seems like the feature where an extension embeds a web view in the popover is broken. Still, it’s exciting to see this nearly there—does anyone know if it’s actively being worked on, or sort of stuck in its current state?