Oh, there were a bunch of things like this.
For example, in Teams, you can type an at sign and then start someone's name and it will autocomplete their full name so you sound like an angry parent scolding a child. But, you can hit backspace. So someone wanting to address me as David does @Dav{tab}{backspace}.
But a lot of other cultures have very different conventions for names. Indian ones are a staggeringly bad fit for this, which is surprising for a company whose CEO is Indian. There's no way of both notifying an person and using their preferred form of address for a huge number of cases.
