"Today, he acknowledges that Apples about-face could be related to changes in the regulatory environment, but he thinks Apples new attitude comes down to one thing: Android."
I'd imagine nearly no one is buying Android phones because you can get a Bitcoin app for them. Chances are good Apple's lawyers said "shut it down, we need to figure this out first" and this is the end result. No conspiracy theories required.
Lets not forget iPhone in available on more networks in US because of Android threat

. More App's (By that I mean both in number and Quality) available on Android than iOS is not something Apple would want to become a common theme. That alone already made them more open and will continue to do so.