The thing is, market forces are pretty good at settling these issues. It's an open-source plugin, so everyone can see what they're doing. If they start being naughty, people can uninstall and switch to something else. But why are we punishing them before they did anything serious, along with locking down the ability of anyone else to ever collect any kind of usage data about their plugins? Even something harmless like "time spent trying to figure out the options screen"?
I hope it doesn't seem like I'm trying to defend spyware here. Collecting metrics about your product is the first step toward improving it. The motive seems like a positive one, not a negative greedy one.