doesn't work here, worked in Google Chrome.

Not working, don't waste your time.

Doesn't do anything

Simply didn't work

still does not work for those wondering

Also have found this does not work.

Does nor work. Any suggestions for one that does?

Doesn't work.

Does nothing to the Youtube dates.

That's not working.

It still doesn't work.
I made an extension for seeing the exact Youtube upload date for anyone interested: https://addons.mozilla.org/en-US/firefox/addon/youtube-times/

It does not work.The chrome extension with the same name works fine , so please update it , because it is the only extension of this kind. Thank you.

Doesn't work
as of 20 Aug 2023 Sun 9.46.50 AM

Doesn't work at all.

Doesn't work. Using Firefox 110.0.1 in case it matters.

Doesn't work.

Obsolete add-on; no longer usable.