I feel pretty much the same, data harvesting should be opt-in, not hidden opt-out.
Additionally, I believe this is against some (?) EU regulations on data protection and I still believe someone whose self-expressive skills aren't sub-turnip should write a petition since I haven't seen any sign of any EU organs noticing what's going on, as usual.
However, I find the number of people ignoring, accepting, or even defending these practices rather disturbing. Has the 'civilized' society completely given up its demands for privacy and not being datamined for no benefit to it? Most of the apologists would respond to this something along the lines of "If you want privacy, don't upgrade" or even "Don't use the internet"... Oh well.