Too much hassle. All I want is to move my tabs from the top to the left side bar. But this add-on does nothing to remove the tabs from the top of your browser. It's pointless. You are required to follow some complex steps which don't even seem to work. Their own github page is out of date, talking about firefox from 100 years ago.

I haven't used firefox for a decade. I thought I'd give version 100 a go, and immediately wanted this add-on. Seeing now why I didn't bother with Firefox anymore. It's decades behind other browsers, as are the addons.