The solution to this would be to compel the company to push an updated version of the app to the target device, and thereby intercept traffic only from the targ

The solution to this would be to compel the company to push an updated version of the app to the target device, and thereby intercept traffic only from the target of the warrant, while maintaining E2E encryption for everyone else. (Of course, some will complain that even this ability to surveil is too much, and all encrypted messaging should be open source to avoid this possibility, but to me it's far preferable to leaving open the potential of hoovering up everyone's communications.)