While the data are interesting, it's not clear how transferable they are to what one sees in the real world. .... You are not going to get infected by touching a surface that has virus on it unless you transfer the virus to your mouth, nose or eyes which would be principal modes of entry to the body and eventually the lungs. Also remember that these were lab experiments ...
The latest data or should I say 'thoughts' , specifically relating to the cruise ships, indicated that the virus was active and persistant far longer than previously thought and contagion was, to a great extent , due to persistence on surfaces, bannisters , table tops , seat covers , arms etc etc
It may not be evidence, yet, but in today's circumstances, wiser to heed words of warning. Too much is still unknown and if empirical evidence points one way, I'd follow it until it's proven to be untrue.