nope just telling it how it is
No you aren't. You are telling in a way that makes you feel artificially superior.
Likely someone who had never been abroad 'told' the OP either currency was accepted or they read it online. In the old days US Dollars were accepted all over and if someone who hasn't traveled for ages is giving advice I can completely see it.
This happens all the time in Europe too...people giving false info...case in point my quest for immigration info. Half the stuff I am told is wrong...so does that make me stupid when I ask someone if that info is true so I can vet it? No.
Search for about anything online and you will get conflicting info and flat out lies. I am sure I could come up with all sorts of things you don't know about my country that some would say you were stupid for asking about. Does that make me better?
Americans are nor more stupid, arrogant, selfish, shallow, jealous, greedy or whatever bad notion than Europeans...and "European" is not a nationality and the attitudes vary widely by country. I have lived on both sides of this "culture" rift for years and I have grown very tired of this nonsense.