Is this the preferred term here?
My partner doesn't care whatsoever about technology, but sometimes has been part of the story that still affords them being anonymous, as "part of the crowd." Literally for all the attention my partner wants on tech things, there is no reason to specify whether we are talking about a spouse or business partner or any other kind of partner - it is someone anonymous who is equally yoked in some manner with the person referring to them, and that manner does not affect the story being told.
But a lot of people are probably using it to refer to someone that in the 1970's would have been referred to as "my old lady" or "my old man".