The first two are basically the same complaint, overdone repetition, with Kiss's Rock and Roll All Nite being one of the worst offenders. I think they repeat the line "I wanna rock and roll all night and party every day" something like 32 times at the end of that song. This is why, whenever Kiss comes up, we say "Kiss sucks".
The third point is a little trickier, because sometimes the voice of a singer who would not normally be called a "good singer" can add some emphasis or grittiness to songs. See Bob Dylan, Neil Young, or Levon Helm as examples.
The fourth point means nothing to me. I have no problem with rhyming and I think it can be used to tie phrases together into a cohesive structure.