There is indeed no such thing. What they can always say is that since there are no moving parts in an SSD drive, you don't have to fear screwing up your data by

There is indeed no such thing. What they can always say is that since there are no moving parts in an SSD drive, you don't have to fear screwing up your data by moving your laptop around while working. In that sense and in the hands of a careless laptop user, it would indeed be more reliable. What I describe above is just an excuse they can (and probably) use. The reality is that it's just marketing text to up-sell you something. I bet it works in many cases.