I asked simply, could you please do something to encourage better measurement?
I did not ask for simonsi's user base, I did not ask about his funding opportunities, I did not ask about his resources, I did not ask him to perform an investigation.
But you did. If you want a better measurement, you need exactly the things simonsi mentions. Dismissing his answer like you do is very similar to the 'are you still drinking a bottle of whiskey every morning?' questions.
simonsi, the ways in which you attempt to dismiss things make me suspect that you're unreasonably prejudiced towards the software; that you're not prepared to consider the possibility of reduced customer loyalty as a reaction to OS X Yosemite.
I am sure he is prepared to consider the possibility. But so far, there is no reason to do that. Your surveys are flawed on a number of reasons (for instance, timing of your survey etc.). I am much more inclined to believe the poll in this thread, simply because it was made much earlier and also replicates the results of other polls very closely.