That seems like a very uncharitable interpretation, especially since the word itself doesn't mean anything of the sort. Basic means fundamental or rudimentary. I take "basic techie" to mean a person with many of the fundamental things that make up typical techies.

Even the most upvoted urban dictionary definition has the first definition as: "Used to describe someone devoid of defining characteristics that might make a person interesting, extraordinary, or just simply worth devoting time or attention to."

Which says nothing about someones intelligence. Granted the next definition does mention being stupid, I hardly think it's fair to interpret a comment in this context as being hostile in the least.