I've been writing about developer snobbery for years on this blog. Would it include this?
It's very borderline.
I agree there are a lot of useless people out there. I've interviewed them.
However, you need to be careful about how you conduct this stuff. The truth is that I have no idea what the mod function is in C#/.NET, because in real life I would never use it. That's not to say I couldn't look it up though. Many of the most brilliant code monkeys I know didn't study computer science at all. They may not know design patterns by name, but they'll code your punk-ass under the table with clean and elegant code.
The truth is, if you drilled me on OOP glossary words in an interview trying to stump me, I wouldn't want to work for you. I have readily available code to download online. Read that and then tell me if I don't know what I'm doing.