Moreover, Firefox’s UI is incomparably superior to that of Chrome.
No. It’s crap. Utter crap.
without considering the infinite userchrome.css customisations.
“Unsupported” and surely an incentive for less tech-savvy people to look elewhere. But whatever. I’ won’t bother to reply to anything else, as you’re statistically one of these persons that spend their life watching crappy youtube videos and buying shit on Amazon.
I mean… Why would you ditch a service you evidently NEED just because some stranger on the internet told you so?
That said, there’s plenty of offline programs that can work on .dock files, such as OnlyOffice and LIbreoffice (with varying degrees of compatibility with existing files). Good luck!