There's a big difference between politeness and total conformity to established (by the powerful) norms. Disagreeing (politely) with government policy on a public forum could easily prevent you from obtaining certain positions or status in the future if this is an accurate trend.
Not to mention that the freedom to go outside of convention without arbitrarily large punishment is worth preserving in of itself.
"Freakin' internet. Whats up with that?" — M.I.A.