NVC isn't a deescalation technique, so its' not that surprising that you've observed that. It is a communication technique, to make sure a message gets through without baggage attached.
In a sense, someone using NVC for deescalation and resorting to the actual formula of Saw [x], felt [Y], request [Z] is likely to not be very good at NVC. People who are really good at that style of communications are going to separate it out so they tell you needs up front, well before you need to know about them, make requests at the moment they want something, and then observations as things become apparent. All 3 at once usually means a surprise has emerged.
There is a pretty basic tell here - it isn't at all obvious why you'd be seething if someone observed a fact, felt strong emotion about it and bought it to your attention, even in a high stress situation. So either you've misinterpreted something (possible) or they aren't communicating - they are pressuring (pretty likely). It isn't called Non-Violent Get People To Do What You Want and trying to use it that way isn't going to work.
In a sense, someone using NVC for deescalation and resorting to the actual formula of Saw [x], felt [Y], request [Z] is likely to not be very good at NVC. People who are really good at that style of communications are going to separate it out so they tell you needs up front, well before you need to know about them, make requests at the moment they want something, and then observations as things become apparent. All 3 at once usually means a surprise has emerged.
There is a pretty basic tell here - it isn't at all obvious why you'd be seething if someone observed a fact, felt strong emotion about it and bought it to your attention, even in a high stress situation. So either you've misinterpreted something (possible) or they aren't communicating - they are pressuring (pretty likely). It isn't called Non-Violent Get People To Do What You Want and trying to use it that way isn't going to work.