For me as an operator...
these things happen....though not expected this early in their service life.
following the uncontained failure of the #2, with the accompanying debris shower of the area between #1 and #2, evidenced by the damage (internally and externally) shown in the leading edge area,
my concern here is that, had that debris shower damaged #1 in some way, either in a control system or causing an engine fire. My take of the events following the landing with regard to shutting down #1 engine, is that they had, in fact, no way of shutting off the fuel supply to that engine at any time post the #2 engine failure....and for me, that's scary stuff!
the 737NG has alternate paths for fuel shutoff controls to each engine...
EW73