Lack of scientific evidence hardly disproves anything. The article is slightly interesting but I know enough about scientific research to not be too surprised nor affected by the idea there’s “no scientific evidence” about that.
My dentist and/or his technician bug me about flossing every time I see them. I also think that the more I floss, the easier a cleaning session is. And I tend to think the dentist probably knows what he’s talking about, and what he says makes sense.
Now, I’ve hardly ever flossed before a few years ago, when they showed me the little plastic P-shaped flossers, and the tiny pipe-cleaner ones, that mean I can actually floss pretty easily. I barely manage to do anything when I try to use just my hands holding a piece of floss – it seems like my hands are too big to get in my mouth and I find it extremely frustrating, but with those tools, it’s not so bad.