A good Catholic is one that obeys the teachings of the Church.
Imagine that your soul is a boat, the world is the sea and religion is a map in order to go to heaven. The true religion gives a perfectly accurate map that, when followed, guarantees going to heaven. A false religion is an imperfect or manipulated map that, if someone follows perfectly, does not guarantee going to heaven.
It's already extremely hard to go to heaven even when knowing all the correct steps to get there. Imagine doing so while believing in the teachings of false Popes.
Hey Lazarus, for once you actually had the courtesy to address me with respect. So I return like with like.
Your post is good. I agree with you.
In case it wasn't clear, and I dont mind repeating, I have nothing against sedevacantism as an opinion. Many resistance priests and even Bishops hold it. But nobody is asking you to be obliged to connect those dots. You are simply obliged to go to Mass insofar as you can and to obey the Commandments and seek the Sacraments from a fully traditional priest.
That is all God asks of us.