First, have a look at the latest hilarious pastiche from NotTheNation, about Obama.
Some quotes :
Obama calls on Berlin to “together hope new free hope united”
Obama delivered a stirring call for greater cooperation between the United States and Europe in facing what he called “challenges tomorrow stand up can face.”
In a clear repudiation of words without uplifting value, Obama said, “Ideals aspirations free, dream humanity one.”
“Tear down walls, we are all Berliners, we are all one, united wall of hope,” Obama said, echoing memorable lines from historic speeches delivered in this city by presidents John F. Kennedy and Ronald Reagan.
“One nation one world love me one people.”
“Christian Muslim Jew everyone together party pin tail donkey my place 5pm,”
[ NotTheNation, you're the man ! ]
Then consider this -real and overwhelming- statement from General Prem, member of the Privy Council.
“Definitely, I don’t want to see the society divided,” Prem when reporters asked if he worried about social divisiveness.
But he believed that when the situation warranted, all Thais would be united.
“I believe when it’s time, all Thais will come together,” Prem said. (Nation)
We could find a serious teaching to this joke : when politicians don’t know exactly what to say, they stick to some keywords and obvious marketing concepts : future/past, forward/backward, unity is better than divisiveness, full is better than empty, etc. 
To be fair, we should note that this rozy rethoric is a real national sport here in Thailand, and not an exclusivity of… General Prem.
Well to be fair if you’re a politician and people are constantly asking you for your opinion on various topics you tend to just rattle off a canned answer.
I think it has more to do with not having any particular interest in the subject matter or the answer being too involved to bother trying to answer. I do this at work all the time. If someone asks me a question about some trivial issue that’s about 1000047th of my list of priorities I give the most politically correct response and move on.