People will actively refuse to read error messages[1].

I don't know how many times I've been trying to fix something with somebody, and an error dialog comes up, and they dismiss it instantly, before whatever content it might hold has a chance to flash across their retinas. Then I have to get them to do whatever it was four or five more times, before they calm the hell down and let me read what the error message is telling them.

[1] https://www.joelonsoftware.com/2000/04/26/designing-for-peop...