I think I'm kind of introverted but I can still interact with human beings. A good programmer should be able to communicate with other human beings, and a presentation (which in this case I believe is "Tell me about a project you've worked on recently?") isn't out of line at all. I talk about what I'm doing at work pretty consistently; you're basically being put in the same position during the interview you would be when having to explain your work to a CTO or someone in a similar position.

And the problem with coding interviews is that they filter out other good candidates, and I've seen plenty of companies complaining that "They can't find any qualified developers."

I would not blame the developers for this, I'd blame their selection process for focusing on things most developers don't really touch or care about when they're working on a project.