He's not a critic of papal authority. In fact he's asking the Holy Father to exercise his authority of confirming the brethren.

The statement " 'Amoris Laetitia' issue includes a big flip-flop" indicate you do not understand the issues he's raised.

The current Vicar of Christ has the episcopate divided into three camps: pro-Kasper, anti-Kasper, and Please God Let the Pope Speak Clearly.