> Their argument is that all team members should use the same tools, and I guess that is a valid point

No. That's only a valid point if something about the tool must be shared between users, rather than just the output. Emacs is a text editor. It reads, modifies, and produces text. The correct tool for each team member to use is the one they're most productive with, full stop.

Jesus fucking Shiva while Odin watches, but I hate corporate management "thinking". It's just become more and more brain-dead over the decades.