Any doctrine not accepted by the faithful disqualifies as doctrine. This is good old sane Catholic teaching.??? Where on earth did you hear that one? The only time I have heard this was in a talk given by Father Martin on YouTube. Tell me, where is that teaching actually found? Just because some random person, even a priest says something, doesn't mean it is true. About 500 years ago many people in Europe disagreed with Rome about many doctrinal issues including divorce and remarriage - These were the Protestants. The church would not change and they left the church. The doctrine was not "disqualified" it remained - they left. I will leave you with this:
2 Timothy 4:3 ESV 
For the time is coming when people will not endure sound teaching, but having itching ears they will accumulate for themselves teachers to suit their own passions,