By Father Basil B. Cole OP 

"[the] burden of proof lies on anyone who wants to fly the banner of Thomism over his moral edifice. But even this is not sufficient for a nod of approval from God. Whether one is Thomistic in methodology or in content, what is most important is to be faithful to the teachings of Christ as expressed in Sacred Scripture and Sacred Tradition as handed on through the perennial teaching of the Church, for “The apostles and their successors are God's vicars in governing the Church which is built on faith and the sacraments of faith. Wherefore, just as they may not institute another Church, so neither may they deliver another faith, nor institute other sacraments” (ST III, q. 64, a. 2, ad 3)."

http://www.ncregister.com/blog/edward-pentin/is-amoris-laetitia-thomistic