We who are strong have an obligation to bear with the failings of the weak, and not to please ourselves.
Romans 15:1 ESV

The strong aren't those who believe that God has annulled any of his commandments about how his people are to live nor those who believe they are free to violate the commandments with impunity.

Those who are strong in the faith are those who have a better understanding of what is commanded and what is tradition, of how to balance the commandments where they appear to conflict, and how to "make a distinction between the holy and the profane, the unclean and the clean" (Leviticus 10:9-11) and to "stand between the dead and the living" (Numbers 16:46-50).