This is the way.
I solely used Netscape Navigator since it came out and after it fell I chose Firefox. My interface has always been modded to look permanently like Firefox 3.6.
Everything is where I want it to be and everything works perfectly.
Many moons ago my employer tried to force us to use only Internet Explorer / Edge for reasons they were unable to explain - since there were none, technically or otherwise. I rebelled and remotely installed Firefox with Adblock / uBlock Origin to every personal computer (I was the unofficial IT guy) and told my co-workers to try it out.
At the next meeting we were told that the use of Firefox is not only approved but recommended. The magic of an “ad free browser” had taken hold, people found it vastly superior and had been vocal about their newfound dislike of MS browsers.
To my surprise I wasn’t even reprimanded in any way.
The intranet at my work is a near-useless dumpster fire. Everything is disorganized, all the important documents and instructions are hidden behind completely chaotic branches and layers of creatively named folders.
I have used the wretched thing only once. I instantly downloaded everything I thought I would ever need to an encrypted USB stick, so I would never have to use it again. This was 7-8 years ago. Everything important is always delivered by email and apparently stored to the intranet afterwards. The intranet has been hacked at least twice, but the real number is most likely much higher. For “reasons”, all the personnel info has also been kept stored on the intranet, despite the successful hacks.