Are you sure about this? It's the default and main browser on every Mac computer, and there's a fair number of those out there, probably far more than the number of people using Linux on the desktop (unfortunately IMO).

>Edge is Chrome with a Microsoft skin and Microsoft advertising swapped for Google's.

Sure, but it's still a different browser, maintained by a competing tech giant and promoted as the default browser on the world's most-installed desktop OS. Tech people may understand it's just a Chrome re-skin, but the people running the court system don't understand or care.