Not the place for it. Thread should get nuked.
This is quite incorrect.

Not everyone who plays this game is American. Not everyone who looks at this forum in the English language is American.

While its nice to show some support to our troops in America, this is not the place to do so.
Nothing about decorum, internet or otherwise, states that it is inappropriate for a member of a country to remind people of the reason for a holiday. The OP mentioned it pretained to US players, and did not, in any way, imply that non-US players needed to heed anything that was stated. The wording could have been stronger in specifying, but if one reads the text with an open mind, it is obvious the OP was talking to other Americans.

Additionally, this thread is in the "General Discussion" area of the "Community" board. It is not in Gameplay, Bug-fixes, etc., it is in a place for the "Community" to have "General Discussion." As some of the players are from the US, and it is a holiday weekend in the US, there is nothing inappropriate about this.

It is not the best place to do it, but it is not wrong to do so here. SE wanted to build a place for the FFXI playerbase to keep in touch. This subject is no less relevant than people talking about any other here - a player wanted to say something to other players, who he/she feels a kinship with.

Why do Americans think the world revolves around them..
There is so much wrong with this statement, it is difficult to know where to begin. Generalizations like this are much more offensive than someone trying to talk about a given holiday. Frankly, this response is much more innapropriate in this community than the OP is being accused of.

Additionally, this is inaccurately used. If one took the postion that the OP was asking anyone to do anything even remotely akin to "revolving around the US," which is extreme hyperbole, it was only asked of other Americans.

I am not making this argument because I am American, or am I defending the OPs out of any bias. I would not have, personally, posted this here either. What I am making this post for, is because this criticism is unreasonable and unfair.

Also: {Reflect} spell, {Can I have it?}