Oh, no, I've spent enough time in the park, seeing thousands of cyclists coming through to easily tell the difference between the majority of great cyclists and the few bad ones. Excellent cyclists like yourself and Regulator, and I imagine just about everyone on this board, have a distinctive way of ringing that isn't aggressive at all. It's a ting or three from further back, and usually accompanied with a little slowing down and care.
You guys are just so nice I suspect you find it hard to imagine how badly some cyclists can behave. The few bad ones are much like the one in the video I linked - multiple loud dinging right up to them, no slowing down, and riding at the pedestrians/skaters/other to make them jump out of the way, often shouting at them too. Perhaps you come across fewer bad ones too, as you're riding along with the flow, whilst I'm often teaching in one spot so have a flood of cyclists come past, from which the few bad ones are very obvious.
Put it this way, her article rings a bell with my own experience, so I find it much easier to accept the truth of it. I don't think we should be defending the bad cyclists and pretending that they don't exist, even when I don't like what it says about us as cyclists. I think we should accept that they exist, just as there are bad drivers humans too.