I completely disagree with statement 1. I think that all age groups like songs. It's more an issue of age-appropriate activities. We as teachers have to find out about our students' preferences.
Regarding statement 2, I find that establishing class routines is a useful habit. They are important in primary education, and as far as I can see children appreciate them.
Finally, I must say that I absolutely agree with statement 4, as we as teachers must take into account our pupils' individual differences. For those who finish early it's good to have some extra EXERCISES.