(and already more signatures than those previous petitions)
It also serves as a reminder that competitors are changing strategy... sooner or later those users are going to shift to competitors.
Petitioning is better than doing nothing and accepting what you're given. It probably wont make much of a difference but its not causing anyone to lose a lot of time over it. Saying "I won't sign it cos it won't make a difference" is a bit silly considering that it only takes 5 min.
And, if you think that it won't become an issue, just wait and see.