If someone can't understand "a=F/m" (or "acceleration=force/mass"), do you really think they have any idea what "acceleration is inversely proportional to mass" means?

Yes. But that's not really to the point. The point is, that equations break the flow of prose, and don't work well in explaining things, other than in a purely mathematical context. If you are not speaking about mathematics (and nobody other than mathematicians really do, and the OP is rather math related, but is not about the math of the uncertainty principle but its applications) it's best to keep equations out of it. This is obviously a rule of thumb and there are bound to be exceptions where using an equation is actually beneficial to the global understanding of the issue, but these cases are rare, and far in between. For the OP for example, I agree that not using equations was probably the right choice, though I would have made different editorial choices in the prose, and possibly using one equation (to wit, \sigma_{x}\sigma_{p} \geq \frac{\hbar}{2} ) could maybe have been defensible, but still a choice I would have disagreed with.