Perhaps, but it's entirely reasonable for users to take a wait-and-see approach to anything security related. TouchID, for better or worse, has run the gauntlet. Security researchers have had their hands on it and tried to exploit it. And the vulnerabilities have been minimal. FaceID hasn't undergone any of that scrutiny and we won't know how safe it is until after it's been through that process.
For that reason, I'm advising all the people I know (who ask) to skip the iPhoneX. If it's proven to work well, then I'll change my recommendation for the second generation. First-gen Apple products have a history of unforeseen problems (holding it wrong and such) anyways, so it's pretty sage advice to avoid the first incarnation of any new Apple design, regardless of the security considerations.