Singapore is far from a nation known for free speech or to pick the side of liberty should it come into conflict with security. I've no doubt whatsoever that approved apps on a CTS "hardware backed" remote attestation phone is more secure. It's also possible to remotely own such a device unambiguously, and provides a central place where apps can be taken offline. It's win win from the point of view of a security agency. It's not from mine.