As in the definition of a cult, special language is used to divide us further and cut us off from one another.
Which definition of a cult is that? Because there is no scientific definition. There are models for high-control organizations (a term used specifically because "cult" has too much baggage for scientific methods), and language is only one aspect of information control. Every single organization on Earth will create its own language for things. That alone doesn't mean they're high-control.
I've been in a high-control organization. It doesn't work like that, and I think diluting the term to cover such broad categories is insulting to people who have been there.