He HAS to offer refunds based on app store policies. Apple now offer refunds within 14 days of purchase to anyone who asks. That’s all that’s happening; to imply that this is some kind of further altruism on Arment’s part is disingenuous, he doesn’t have a choice.
And let’s be clear, most people will not ask for a refund because
a. it’s too much bother
b. it’s only a couple of $
c. the author of the app is firmly on the moral high ground
d. many people won’t realise that he’s pulled support
I’m a big fan of Ament’s work and have bought a number of his apps, including Overcast which is by far my favourite podcasting app; but I’m really sceptical of his motivations and timing here.