I am doing my best, to understand why it is a bad thing for a company to give consumers a choice. I wish that Canon would give us choices like this. Its great that Canon offers a bunch of different lenses, but not ok for Nikon to offer a bunch of different cameras? That is hypocrisy to me.
I think the people complaining do so because quick refreshes hurt resale value. Why they think Nikon should protect the price of used gear at the expense of customers ready to buy new gear (if they sat on the 610 for two years and sold off the flawed 600 stock, that would be truly something to criticize) is beyond me, but maybe it feels different for people who buy gear based on a schedule rather than on an as-needed basis.