On the other hand, I just got on-boarded to a doctor's office system that included a warning (delivered with the on-boarding link by SMS) that the website would "only work on a PC with Firefox or Safari".
I've run into a few older sites designed around IE quirks that have stopped working under MS Edge but run great in FF, actually. Sql Server 2012 Reports websites for example. Which makes sense - FF was designed to imitate some IE idiosyncracies that Chrome didn't care about, and Edge/Edgium uses Chrome renderer now.
