I tried installing the Fedora display link driver from here: https://github.com/displaylink-rpm/displaylink-rpm

It didn’t work out of the box, I need to fiddle with it some more.

But, does M3 macbooks support egpus? My understanding was they don’t.

My goal is to drive all of this off single cord.

You could create the firstname.lastname.secret@company.com alias to your current email, then create a filter to auto-archive anything from outside your domain directed at your email directly.