

When calling that number, the caller will need somekind of proof that they are in control of the car that they are trying to opt out of ads. Afaik, the easiest way to accomplish that when requiring a phonecall, would be pairing phone and car. But obviously Stellantis is not going for easy with this setup, so this is purely speculation on my part.
A non exhaustive list of what makes them awful: https://expertbeacon.com/why-is-paypal-so-bad/
Afaik, the issue that was making the most victims, was that they were facilitating scammers that targeted sellers:
5. Good Luck Recouping Losses as a Seller in Disputes.
89% of sellers experienced dispute resolution problems with PayPal in 2021 surveys. Despite providing evidence the item shipped or service rendered, they lost cases and sums averaging $622.
This is driven by PayPal‘s buyer-favored review round taking 1-2 weeks. This favors scamming buyers at the expense of legitimate businesses.
Iirc, there was a time when Paypal always sided with the buyer, irregardless of evidence or past track record, the review process was useless. Once scammers picked up on this and began scamming sellers en masse, Paypal still kept their policy unchanged for years and sellers started to raise their prices on platforms that forced them to accept Paypal (ebay used to do this). Ebay has since tossed Paypal off their platform. I don’t know if Paypal ever improved.