From the article:

The inability to video conference reliably [on LibreWolf]

Could someone elaborate on this? Also

I like my browsers to remember when I have zoomed in on a tab

If she means the browser remembering the zoom levels on different pages, this can be done IIRC by disabling resist fingerprinting in about:config and then installing the canvas blocker addon which is not as good as RFP, but for me at least has been a good compromise privacy-wise.

Out of date info! Have a look at this instead: https://github.com/arkenfox/user.js/issues/1775