PayPal won't delete an account I didn't knowingly consent (I'm sure there was some hidden terms hiding behind some dark UX pattern) to being created unless I prove my identity with information that isn't already recorded on the account. At least, not visible to me.

All that's there is a name and bank account link, I told them 'I am Oliver Ford' and that I'm happy to provide a secret shared by way of reference attached to a penny transfer to that linked account; but no - I must provide a copy of my passport and proof of address (which they don't know, and I can edit on the site anyway), obviously.