What does rock criticism mean?

Say what you really think, unlike most pop songs. I analyze your so-called rock criticism in the following two forms:

1. Poetic, with poetic lyrics, euphemistically express their true thoughts, and the lyrics pay attention to meaningful words, such as Zhang Chu's "A Man is Shame".

2. The lyrics are simple, the language is rude, and they don't beat around the bush, and they don't pay attention to artistic conception, such as the songs of Pan Gu Band.