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YouTube is now fully blocking ad blockers around the world
(9to5google.com)
This is a most excellent place for technology news and articles.
iOS web browsers are forced to use the safari/WebKit engine, so you don’t get Firefox extensions, sadly.
The main benefits of using Firefox on iOS is if you prefer it’s interface or want to sync with desktop Firefox (which is why I use it).
Hyperweb might work though.