I dunno, really. Maybe PG is a bit more expressive and demonstrative about his opinions and feelings, and that's about all there is to it. These guys play for the pride of being the best in the world, and they can get easily caught up in the heat of the moment. Look at Chen Long at the end of the finals that he won; a lot of people will say a lot of things, but not allow for the fact that at 22 years he is still very young, and will temper his reactions with more experience and exposure.
We are just onlookers and fans, and most of us are not even physically present at the event. And we tend to get worked up and get our knickers all in a twist (at least I do!!

) at something that happens on our television screens, and influenced or irritated by the commentators' words, and
that becomes a whole new subject!
And then we play the culture card, forgetting that these players have been travelling around the world for years, and are pretty much clued in to other cultures and ways by now. And that they probably also know a lot of the top umpires by now. That remark about "poor asian umpire" was surely uncalled for: PG gives to equally to anyone when he is in the mood!!

Besides, there are so many players who indulge in gamesmanship and brinksmanship nowadays and are either actively or passively encouraged by their coaches and others (and no, it's not just the Danes who are the culprits) and that IMO is far worse than gramps letting off some steam.

I guess LCW was also probably just enjoying the moment...