Do you think it’s possible for companies or individuals to not comply with court ordered surveillance and search warrants?

Companies can’t, no. That’s precisely my point. Hence your argument that iOS is more “secure” than any other bar Graphene is disingenuous. iOS is developed by a company which can be (and likely already has been) pressured into compromising its users on behalf of three-letter agencies. The NSA slides are strong evidence of that.

Large collectives of devs spread out all over the world, however, can withstand such pressures since they’re hard to get a hold of. The developers of OSs such as Graphene, Debian or Lineage could easily resist such attempts, simply because they’re not a legal entity incorporated inside a single jurisdiction.

You’re correct in saying that Apple is “selling” privacy and security (as in: marketing, pinky-promising). They may be selling that story, but I ain’t buying it.