If you don’t drive, you have literally no reason to oppose speed cameras. Speed cameras reduce the negative externalities of cars at literally no cost to you. If you don’t drive, you cannot get a speed ticket.
Also, for the China fans out there, consider how the widespread implementation of automatic traffic enforcement cameras in China that do things from watching if you’re speeding, to watching if you’re driving in multiple lanes at once, to watching if you’re wearing a seatbelt have massively improved driving conditions and reduced road chaos in China. Automatic traffic enforcement makes driving better.