I don’t think they concluded to use SBC on Android, they concluded that it was better than AAC on Android, and also noted that SBC was capable of decent quality, but where quite limited on most (or all) implementations. In real world, with Android, AptX sounds, subjectively, but significantly better than SBC. Of course if it’s to be transmitted to cheap tiny BT battery powered speakers, the difference don’t matter. AAC indeed should only be used with Apple device. AAC is quite good there.
Edit: I see Amir concluded differently but something seems wrong with this product.
AptX has repeatedly measured worse than LDAC and AAC.