Okay, so you say Schuckardt was schismatic because of his ordination/consecration, and that it extended to Fr. Chicoine for attempting to be ordained by the same man.
Do you extend being schismatic to the others who approved and participated? Why, or why not?
Schuckardt was certainly in schism because first, he left the Church - second, after he left the Church, he then started his own "Religious Community" as the CMRI website describes it.
Schuckardt, who already started his Religious Community, started to grow his Religious Community after he was ordained and consecrated by a schismatic bishop (Daniel Brown) whose episcopal lineage is traced back to a bishop that was excommunicated by Pope Pius X himself. Correct me if I'm wrong but that being the case, everyone that is ordained/consecrated from that entire lineage is also excommunicated, therefore in schism.
There is a lot more to it, but no sense in proceeding any further until the above is understood.
Receiving a valid sacrament from a non-Catholic is normally sinful by ecclesiastical law, unless there is a proportionately good reason in an extraordinary circuмstance, then it becomes necessary and good. It is by the virtue of epikeia that the letter of law can be broken to maintain the essential spirit of the law. The most prominent example is baptism, and the next most common is confession (in danger of death).
In an extreme situation where the validity of the priesthood is stake, and thus a threat of extinction of the Sacraments, the priesthood can likewise be conferred by a non-Catholic. This is what the CMRI did with Brown. It was merely for the Sacraments and had nothing to do with approval of the Old Catholics and their tenets. Mistaken or not, the attempt had the color of legitimacy in this unprecedented, virtually unforeseen crisis. A mistake in such an extraordinary circuмstance doesn't equal schism.
An analogous situation is this: the moral theologians teach that incest is a mortal sin. Yet they teach that in a circuмstance where the human race is facing extinction, it would be good and lawful for brother and sister to get married and have children. Now, it is certainly difficult in such a case to truly know whether the human race, world-wide, is truly facing extinction, and if a mistake is made, the Church is as merciful as Our Lord is. Jansenists and Pharisee-types would have no mercy and condemn the mistake with the most rigorous charge possible by quoting books about the horror and grievousness of incest.
I don't know where to even start with this. This is tragically sad.
Have you ever heard the old saying: Two wrongs don't make a right?
Once again, I offer historical facts, you offer your opinion, which is so perverted I find myself in awe. What you base your opinion on God only knows, whatever you base your opinion on is certainly not Catholic.
FYI, since the time that Our Lord instituted of the Sacrament of Matrimony, and even before that in the Old Testament, the sin of incest will never be good and lawful - never.
Here, start at verse 6.
Whatever im"moral theologians" you follow, run, don't walk away from them.