For a single payment, they can throw away all the metadata once the funds hit their bank account. They _can't_ do that with recurring subscriptions, since they

For a single payment, they can throw away all the metadata once the funds hit their bank account. They _can't_ do that with recurring subscriptions, since they need something that links to your CC or PayPal details to re-bill it next month/year. They've chosen to not do that any more, possibly as performative privacy, also possibly as having real privacy concerns for their clients, and also also possibly so they can tell law enforcement and courts to stop bothering them when needed. (realistically, it'll be some combination of those three things, and possibly others I've not thought of, that triggered them into this)