I think the OP is really referring to a thousand little cuts, and this might be possible a last straw (the jr clerk etc). That's saying a lot cuz he's a pretty loyal Marriott person. Everyone has their breaking point.
FWIW - I should be dead by now cuz I never wash the glasses or the cups, and truthfully never thought much about it until this thread.
But then again I haven't watched the video re: the glasses, nor watched the one that shows all the germs & bugs on the comforters, the phone handle, the remote control, the walking across the floor barefoot, etc. My bad. Of course if I did watch those, I might never leave my house or stay in a hotel or fly on a plane or rent a car
OMG - I just realized, I live life on the edge! No safety for me. I'm adventurous
Cheers.