> HTTPS means the network connections between the app and the backend are opaque to third parties including the user.
It means the payload is. HTTPS alone doesn't have any special considerations for hiding the domain, which I think is visible so the request can be routed correctly. And since a lot of ad-blocking is based on domain, that ought to work.
You're not wrong, but ads are already moving to a different model with either first-party URLs or random ones that are difficult or impossible to enumerate to get around ad blocking. With Apple's new thing that's going to bring the reckoning even sooner (sigh). This technique is much harder and won't last very long I'm afraid.
It means the payload is. HTTPS alone doesn't have any special considerations for hiding the domain, which I think is visible so the request can be routed correctly. And since a lot of ad-blocking is based on domain, that ought to work.