I think some of them are just being a bit snobbish. Basically, if it tatses nice then the chef has done their job. I doesn't matter to me whether there are twenty ingredients and you can't pick them out by individual flavour. It's the overall blend like the costituents of a good perfume shouldn't be picked out individually. It's the end result and if that's pleasing, that's good enough for me.
My personal opinion, and although not a professional chef, I do enjoy cooking and feel I have quite a good knowledge of the overall prcocesses involved.