I think it's unfortunate what happened to Mr. Moo.
However I would think if quality was extremely poor overall there would be more stories coming to light.
I'm sure even shoes manufactured by Edward Green and John Lobb sometimes aren't perfect and slip by quality control from time to time.
What's more unfortunate is how the situation afterwards aparently was handled.
However one or even two incedents of this kind of thing doesn't always ruin a brand.