Please describe what R&R is exactly, in your opinion.
R&R strive to keep and grow in the faith no matter who is a heretic according to the words of St. Paul: "But though we, or an angel from heaven, preach a gospel to you besides that which we have preached to you, let him be anathema."
According to St. Paul, because the pope preaches another Gospel, we let him be anathema and go on living the Catholic faith. Whether or not he loses his office on that account has nothing whatsoever to do with us.
Can you please provide an example of something Catholic that the Pope has taught in which sedevacantists felt bound to obey? I've never heard of such a thing.
Where did you read that? I said: "if he ever teaches anything Catholic" the sedevacantists will let everyone know because it seems that they never stop watching everything he does so he can be criticized and slandered, whereas R&R rarely pay any attention to his heresies anymore, so we depend on those who watch him closely, namely the sedevacantists, to let us know in case he ever does anything good.