If it is about appointment of judges, I agree with you that the parliament has right to add/amend/edit constitution regarding this.
From what I understand, the CJ was referring to the amendment that would take away Supreme Courts powers to analyse the amendments in the constitution and see if they conflict with other articles or basic human rights. This is sensible in a sense that parliamentarians are not expert in law and courts should have some right in determining if a particular law conflicts with other parts of constitution.