I think it might be some kind of expectation that since it's a dialogue on a computer it's automatically going to be something complex and technical.

A couple of years back the company I worked for developed a website for this other company. Our point of contact had previously worked with us at a previous company, so he knew people at our company already. He had the designer's phone number (mistake) and would frequently just call her the moment he hit send on an email. "Hey did you see my email???"

He absolutely refused to learn how computers worked, at all, which was odd given his role was lead for digital marketing. One stand-out moment was when he emailed us "URGENT FIX NOW!!! WEBSITE BROKEN!" The designer and I both freaked out for a second, until we checked the site and everything seemed to be working correctly. We then asked him what exactly was wrong with it, and he sent a photo of his laptop screen. In the system tray, the internet icon was crossed out.

Dude had a laptop with one of those physical wifi switches. He'd switched it off, tried to access the website. Then gone on his phone to email us that it wasn't working. The error message was along the lines of "You don't have an internet connection."

I no longer have contact with clients, and it's a blessing.