Don't you see what he means? You reject the doctrine and practice in favour of your own personal interpretations of Catholic teaching. Ask yourself where do you get this interpretation from? Most certainly not from the teaching of the popes and councils including Vatican II.
It is a mystery to me and always has been how someone can claim to be a Catholic and at the same time reject what the Catholic Church actually teaches. I am not advocating that anyone should leave the Church, I am simply asking how it is possible for someone to not subscribe to the tenets of the Catholic Faith yet say, "I am a Catholic."
It strikes me that it is similar to ethnic, yet non-practising Jews turning up at Passover because of a cultural attraction rather than out of any religious conviction. In the same way I suspect many modern Catholics 'practise' their religion,.