I think all he's saying is: (1) What constitutes "politeness" (especially in this context) is highly subjective, and (2) Just ignoring someone's thread because you think it's impolite to ask questions the way he did, ironically, might be more polite than chastising him for it.
Someone posting a thread with a question isn't necessarily asking for
your time & knowledge, specifically; he's only asking for the time and knowledge of anybody not offended by the form of his request. Personally, I prefer the direct approach of someone's just asking a question to having someone who really only needs a specific question answered feel obligated to "introduce" himself first. IMO, it's his prerogative to participate more after getting his questioned answered and it's the prerogative of everyone else to respond to the thread or ignore it for any reason.
A few months ago, someone signed up here, apparently, just seeking some info on finding a Flightmaster crystal. I happened to know the answer and responded without any issue. Someone else then responded to the thread strictly to chastise the OP for getting right to his question without more of an introduction and suggested that my responding to it was excessively nice. I responded, essentially, the exact same way as mayankyadav, suggesting that if anybody considered the OP's approach to be rude, one could simply exemplify politeness and the avoidance or rudeness by ignoring the thread altogether instead of chastising the OP for simply asking for the information he sought. The poster who had initially referred to me as being excessively nice then took great offense to my comment, seemed to take it as a personal insult or accusation of rudeness on his part, and then vowed never to help or provide any information to me in the future, in the event I ever needed it.