Most online petitions are nothing more than a way to safely (for those targeted and for those amongst the authorities who support them even against the public interest) dissipate the common people’s righteous indignation, by making them feel like they “did something” whilst said something is just about the least impactful thing imaginable.

(Some official ones, for example those mandating parliamentary sessions on the subject if they reach a certain threshold, might not be so, though its unclear as it really depends on the legislation around it allowing politicians to just ignore it at will)

This bullshit will require a lot more than adding your name into a list on some corner of the web in some legal jurisdiction where they’re free to sell your private information.