Yeah, if you're talking to CS folks who have encountered that definition as part of a theory class, then sure, good chances they could be scolded for asking the wrong questions using that word.

But that's a small bit of CS undergrads, and a very small part of the internet / wider world, who have a more colloquial definition of it. Not sure it's entirely worth scolding them, is all I'm saying.

The post is on a theoretical CS blog, talking about a question in a theoretical CS textbook. Why shouldn’t we expect it to use theoretical CS jargon?