See now, this is why the official surveys go into so many sub-questions like "How recently did you last DM a game?" Because sure, I've made a few tries to take a turn behind the DM Screen. The last time was 15 years ago. It's definitely some something I'm currently doing. But if you ask me if I've ever done it, then I have to say yes.
If I think about my current D&D group, there's only one person I don't know for certain has taken a turn running a game at one point in their gaming career. But we still tend to bounce between only two people as our DM, because everyone else was running for different groups or different systems and isn't interested in running a campaign right now. New jobs, new kids, they're just not able to take on the load.
So that's why it's important to realize that you've got a big bell curve of people who had done it at some point but aren't actively pursuing it today.