So, not safety issues, per se, as in an unsafe product --- just simple paranoia about showing off your X in your daily environment.
I get that. I would also make the choice to leave my phone out of sight, when there are those who might "sketch" around, a little. Those would be rogue artists, I guess...or those who wear Sketchers. I fear them, too.
But then, an ugly, stickered-up case on your X would take care of appearances, IMHO.
I’m not sayin the iPhone X itself is unsafe!
But yea that’s a good idea putting a case on it or something so it’s less noticeable.