Trust me, I would 100% agree with you if it was 1 week ago. The problem is that I just discovered I need to handle this Paypal thing because they use analitycs cookies when the user buys. That's the point of this thread.
So, sadly is not a necessary technical cookie anymore and I must give the user a choice. With your method you include all Paypal cookies included the analytics ones (unless cookiehub allows a more granular selection, I don't know), so I GUESS you're doing it wrong.
Thirtybees is an ecommerce software, I bet 90% of its userbase uses Paypal module, so I really wonder why I can't find other topics about this. Looks like a big priority to me.
Please tell me if I'm wrong, comments are welcome.