I honestly do not think its rude, that when someone posts and is all upset about what to most is a non-issue that people say that.
If they are asking for advice on how to handle a rudeness and others do not think what happened is rude at all... well then thats the advice.
If someone does not want disagreement and just wants people to agree with them in the "oh how awful for you!" manner...then maybe the I Need a Hug folder is the way to go.
OP: I was walking down the road and someone crossed the street right before walking by me. Thats incredibly rude and really hurt my feelings. How to handle?
Reply: Is there some background? Do you know the person?
OP: No...it was a stranger, but I just hate being snubbed and ignored like that because _____ in my past.
Reply: Well, you have no way of knowing why they crossed, I understand that you might have some personal things going on that make this a sensitive issue, but its really not rude to cross the street when about to pass someone.
If its something like that, then I think its just part of why we post on here...to get other opinions and advice. Thats sort of a given when posting here.