Yes, I have seen the same interview, it was quite good. At this stage - or at least how most would use the autocad/bricscad api - the space where you would separate out your business logic from the api is quite small.
That is,
most of the stuff we do with CAD programming is manipulating the host objects using the host api's, it's hard to separate
your code out as it's tied to all the helper functions of the host api.
Basically it's scripting and if AutoLisp had a decent built in easy to use UI library I'd doubt we'd even be having this conversation, and the main reason VBA was popular was the ease of building a UI, not for its language, lisp is a lot better as a scripting language IMO and is probably faster!
But it doesn't, so we're all stuck learning new languages and paradigms basically just to gather and display data in a dialog box!
It makes you wonder sometimes....
