Qualcomm has issued an official statement regarding the confusion about its Quick Charge 3.0 technology not being compatible with the USB Type-C specification. The statement from the company does not directly address the matter at hand though.  In its emailed statement, Qualcomm says that it has not received any reports of device malfunctioning due to its Quick Charge 3.0 technology. It also notes that it is up to the OEMs to implement the Quick Charge technology in a way that is within the USB Type-C standard. So, as it is clearly visible, the statement from Qualcomm does not address the USB Type-C spec violation, which probably means that it does. Sure, the final implementation is done by the OEM, but I think Qualcomm is just trying to pass the buck from its shoulders to that of Android OEMs. The company does assure that you can safely charge your other devices using a Quick Charge 3.0 charger without harming them in anyway. Considering that non-compliant USB Type-C cables and chargers can wreck havoc to your device though, I will strongly recommend you to not do so. USB Type-C is definitely the future, but for now, the technology is in a mess due to compatibility issues.