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Firefox to become first mobile browser to support desktop extensions later this year
(blog.mozilla.org)
This is a most excellent place for technology news and articles.
I've been using the nightly build, using the desktop extensions for a while now. It's SO worth it. In particular, the YouTube "SponsorBlock" is super convenient.
Why not just install revanced youtube?
I have other tweaks and scripts that I have written for personal usage. Using nightly Firefox makes it so I can use those tweaks universally on desktop and phone.