There's nothing wrong with certification.
I go along with Hammer. Certification is good.
However, this isn't about certification as such. It's not even about copy-protection via the dongle. What it is about is the licensing condition that means you can't sell AOS4 separately from the hardware (with the express exceptions of the Phase5/DCE PPC boards and the A1-dev board). This licensing condition has no other purpose except to control the market and thus ensure that there is protection from competition for favoured parties.
Having said that, I'm still against the petition. I think it's pointless and counter-productive, and the only way to get bad decisions changed is to vote with the wallet.
(I think I said that before... :-P )