Why is he down-voted?
He didn't want to join paypal, fair enough.
He didn't know he could pay with paypal without joining it, now he knows it.
Other HN-ers might see this post, realize they don't need paypal, and go back to buy the video.
IMO this shouldn't be down-voted.
p.s. I know I could have just upvoted it instead of writing this useless post (Which I'd understand if you downvote me by the way), but I thought my point would be clearer with a message rather than a battle of upvote/downvote.