I'm really glad you pointed out the "East vs. West" issue. This is usually dismissed because the users in this forum have their freedom of speech or to their own opinion. I won't deny it, there are in fact many shitposters coming from the East and (shamingly) from my own country. For someone who's born with a different native language other than english, it's going to be hard for them to construct sentences in the correct grammar. If they were to excel and post constructively, it's true that they may do better within their local boards which may lack sMerit sources. You see, this gives them minimal opportunity to contribute and participate in the forum if they were confined to their local boards.
Obviously, the "sir, dear" remark is a cultural barrier. This is being said by the Eastern because of their value of respect, and they do this out of habit because they got so used to it. A habit to one is offensive to another. So who should adjust here?
Perhaps this forum lacks a little cultural relativism. All cultures are worthy in their own right and are of equal value. Are the opinions of others no longer of value just because it is not properly constructed in English?
1. East vs. West
It is a common impression that most of the people spamming or shit-posting are from the low income countries in the eastern hemisphere. Indian, Indonesia, Thailand, Phillipines, Vietnam etc. To people from these countries, I'd say that its our own mistake that the west sees us as incompetent and lazy when we write incoherent sentences.
By showing our willingness to spend our time on making 1000 useless posts, we confirm that we are in fact useless. Its then natural to have disdain for such actions. Accusing the other person of racism then is no defence. If you really want to mount a defence, then do some real work and prove your worth.
This constant trend to use salutations (Sir, Dear, Respected) is also a cultural difference. To you, it maybe normal to show respect to someone in a position of power over you, but as far as netiquette and western work culture is concerned, this is considered sycophancy/ ass-kissing. This is considered the hallmark of an incapable, scheming individual and not of respect. So avoid this like a plague. Instead, address people with a normal Mr./ Miss