You're probably using the regular Firefox browser (e.g. for Android [1] ) which supports most extensions and has done for a long time.
But this was deprecated a few months ago in favor of a new browser, still early in development, that has no extension support. Previous HN outrage: [2]
At the time I don't think they had any timeline for adding extension support, but now it sounds like major extensions could be supported within the next 9 months.
Was it really deprecated ? I have heard something about it being Firefox 68 based for the time being while their are working on something new (presumably Firefox Preview ?).
It would be really sad if they really did deprecated it without providing a proper replacement first - eq. comparable addon support & other things the current Firefox on Android can do.
But this was deprecated a few months ago in favor of a new browser, still early in development, that has no extension support. Previous HN outrage: [2]
At the time I don't think they had any timeline for adding extension support, but now it sounds like major extensions could be supported within the next 9 months.
[1] https://play.google.com/store/apps/details?id=org.mozilla.fi...
[2] https://news.ycombinator.com/item?id=20295694