The original comment never stated that all driving tests everywhere in the US are all a joke. Believing that is ridiculous: the US is a big place and things vary dramatically from locality to locality.
The guy is correct. MY driving test was a joke, and other people have testified their tests were a joke too. Therefore the statement is correct. He never said ALL driving tests in the US are a joke.
It sounds like you're taking this personally, and have some kind of issue because you failed two driving tests.