Pragmatically, on iOS the ad blocking you’re getting with paid apps like Wipr 2 is still better than uBlock origin lite.
So, in my opinion, there wasn’t a really good reason to wait for uBlock to land on Apple’s platform.
The ad blocking aspect never seemed like a flagship reason to use Orion if you ask me.
Some of the other features are.
The ad blocking in Wipr 2 makes the Apple News app tolerable.