Nothing in this injunction prevents Apple from requiring that if apps offer purchase options they must also offer IAP as an option.
I'm certain that even if the injunction were to go into force, Apple would continue to require that.
Apple could probably even mandate that the other purchase options not be cheaper than IAP pricing by more than apple's 30%, preventing developers from putting absurd prices on the IAP option, and only put real prices on their alternative methods. from the wording of the injunction itself is not even actually clear that apple cannot mandate the IAP and non IAP prices must be the same (the dicta might provide more clarity on if that would be permissible).
Then it becomes up to you if whatever discount is offered for non IAP purchases is worth the extra risks, or if you would rather use IAP.
I'm certain that even if the injunction were to go into force, Apple would continue to require that.
Apple could probably even mandate that the other purchase options not be cheaper than IAP pricing by more than apple's 30%, preventing developers from putting absurd prices on the IAP option, and only put real prices on their alternative methods. from the wording of the injunction itself is not even actually clear that apple cannot mandate the IAP and non IAP prices must be the same (the dicta might provide more clarity on if that would be permissible).
Then it becomes up to you if whatever discount is offered for non IAP purchases is worth the extra risks, or if you would rather use IAP.