Indeed s/he is right, and I have expressed the same. The article I linked has a nice description too.
I think food tastes different when eaten as it’s intended, whether with fingers, chopsticks, or otherwise (I mean… pizza with a fork? Yeah, it tastes like something, but not the same… and apparently it’s newsworthy too).
Re the other part, what @Rasam mentioned elsewhere bears repeating – most (Western) cultures are vocally intolerant of their food being eaten other than as they eat it – imagine the reaction to Indians eating pasta at an Italian restaurant (never mind in Italy) with their fingers, or a Sunday roast. 
