Burke has long been a champion of papal authority.  Now he is a critic.  It seems the 'principled position' you assume he holds on the 'Amoris Laetitia' issue includes a big flip-flop on his earlier 'principled position' regarding papal authority.  So, one of Burke's 'principles,' at least according to you, enables him to throw other 'principles' under the bus, so to speak.  Please let me know which of Burke's 'principles'  are not subject to change and which can be changed as he sees fit.  

What's going on is not difficult to understand.  The current 'Vicar of Christ,' guided by the Holy Spirit, has decided to take Jesus at his word; namely, that God is God of love and forgiveness who desires mercy, not sacrifice.  Burke and his cabal would seem to support a God of vengeance and unrelenting punishment who desires sacrifice, not mercy - and they feel threatened by a Pope who takes the words of Jesus seriously.