I was quoting you, using the > sign to refer to what you said directly. I thought the quote was useful to highlight that it can be easy to have a mental disconnect, or even an antagonism, between developers and their stakeholders.
The people who use the software of the people who write the software. If the word "customers" is triggering, the argument holds just as well as for "users".
Why are you dodging the question? Who are you talking about, and why?
It's not the commenters above that complained about the error message, they aren't users and highly unlikely to ever become users. Instead you've brought in some unspecified other for unspecified reasons.