I reject sedism mainly for it's primary reason for existing, namely, disunity - as if trads need more of that. The whole idea has proven itself to be iniquitous.
Where does this idea come from?
I see that the one side wants to keep the government intact, so the church can continue and the people who believe this put Pope Francis' name in the Mass (sspx, resistance) but say you can't follow a bad pope. Then you have the other idea that a heretic can't have authority in the church, so they choose to leave the Pope's name out of the Mass (cmri, sspv, rci) and say the seat is empty. This is what is truly causing the emotional responses and divide.
A future Pope can only decide on this and previous Popes didn't think this could happen. I know I keep beating a dead horse, but I just want both sides to pray and do penance, so we can bring down the graces so God can fix His Church.
The evil one loves the divide and we just keep feeding it. we can't change others we can only change ourself.