Poor formatting/spelling/punctuation/readability. "u just learned that the us is even a trader of bitcoin at all" - how do you know what aazaa knew or didn't know prior to commenting?
In general just an incredibly low effort/value comment.
I don't know why you have been down-voted but candidate possibilities include the first sentence being read as snarky (even if it wasn't the intention) and using "u" for "you" in a forum where a more mature* form of expression is the norm.
* I don't intend snark either but I'm not sure how to put it politely...