> This is not about understanding the message, ...
99% of the population have no idea what "Header size exceeded" means, so it absolutely is about understanding the message, if the devs expect people to read the error.
Yeah, I would certainly not expect the user to understand what to do about a "Header size exceeded" error.
But I WOULD expect the user, when sending a message to support, to say they're getting a "Header size exceeded" error, rather than just say "an error".
99% of the population have no idea what "Header size exceeded" means, so it absolutely is about understanding the message, if the devs expect people to read the error.