I agree that people trying to appear smarter is toxic, at least if done very often. (Even if not done often, maybe it's still toxic, just not a lethal dose.) That isn't what I meant.
It really comes down to this: You can't blather at the computer. You have to make very precise statements to the computer. If you can't be precise in your communications, you can't program.
That usually spills over into human communications, too. People who can talk to computers can usually talk to humans who can talk to computers, because they can use at least some of the same terms with the same meanings.
And they can talk with the same mindset. You can't show off to the computer. You can't get the code to compile or to run by using more flowery wording. Tech people tend to carry that mindset into their communication with each other.