I don’t think there would be anything harmful if you tried, but it might just flat out not work. My understanding is that the kernels that end up not popping probably just aren’t able to. There’s a certain amount of moisture that needs to be inside the kernels in order for them to pop. If that moisture level isn’t right then it won’t go off. So the fact that they didn’t already pop, probably means they can’t.
I’d rejoice, but I’ll believe it when I see it happening consistently. I want smaller, denser, and richer worlds. Not giant, sprawling, and barren. It doesn’t add anything to a game for me if I have to walk or drive 10 minutes to get to my next location and it’s just empty in between.