[kranner]

> However it is inappropriate for an outsider to use an unofficial name or deadname without permission, especially in official context.

I don’t see a single reason why it is inappropriate, other than it offending you. Nobody needs permission to use words from anybody else. If anything is offensive, it is this type of gatekeeping.

Keep carrying on like this with talk of how outsiders should behave, and Bangalore will lose the competitive advantage it enjoys as IT workers will find friendlier places to move to.