No, I reject the update for non-trivial issues which I feel that violate my privacy or could pose some other serious threat and move to some other browser as soon as possible.

> look at how studies operates

It works on the background and without asking you anything. Is that correct?

> If you're using firefox, go to about:studies and see for yourself.

It says "You have not participated in any studies." - probably because I have them disabled.