If I understand it correctly, they are reaffirming the decision that Apple has to allow developers to link to other payment options? Which mostly mollifies the issue IMO no? I can just create a link to my site for payment?
Yes, that's the only one they upheld. But it doesn't say that Apple can't still charge a fee for any users that come from the iOS app or otherwise use the iOS app (i.e. this doesn't mean Apple can never implement iOS licensing fees on a per-user basis), so they might still charge 27% of sales initiated/driven by their product, iOS.
My read is you're permitted to link to your site for payments now, which was not permitted before, but this decision didn't force Apple to allow external in-app payments. So it only really impacts companies selling external subscriptions like Netflix. I'm sure the decision will be aggressively dissected over the next couple of hours by actual attorneys, anyway.
It's unclear to me if this only covers "check out mycompany.com for alternative payment options" links, or if your link could be a "Purchase Now" button that goes right to a payment form. If the latter is also allowed, then you could set up a pretty frictionless experiences that completely bypasses paying the 30% Apple tax.
