As it is only launched in Venezuela on text message transaction system, it should be further investigated future. But i think it is not fully risk free. We know there are many frauds in mobile banking system in our country. So to be honest, we can't say it as a good method until it is to be tested in most of the countries.
This method of sending crypto through sms is already tested however every system has backdoors and supposed to be abused by hackers. So, it is up to the users. If we look sending bitcoin through address, it is also risky because there are copy paste malware who can change your btc address.