I do think that the western world, particulary the U.S., is obsessed with not making offense, a fear of taking a stand that may be abrasive. A friend once said to me "you have to embrace your inner asshole". Ie quit worrying about what people think of you.
But on an individual basis, I've found pretty much any comment, embarrassing observation or verbal assault is good to go in most Asian societies. Most Asians will say whatever the hell pops into their head at any moment in front of strangers they've never met without hesitation.