This is an excellent video from Fr. Hesse on the validity and invalidity of the NO sacraments. Whoever is interested in this discussion we are having, it is well worth listening to the whole thing, but if you only want to listen to about 15 minutes that deals pretty much directly the subject that we are discussing, start at 51:20. If you start from this area, he speaks of the SSPX's SG's and Bishops that would not re or conditionally ordain him.
Otherwise, if I did this right, I started the video right at the pertinent part @ 56:40, just listen for the next 7 seconds, this is what the Church has always taught: https://youtu.be/2gPX7XEBdUQ?t=3400
Here is a quote from Trent's catechism below, it is a teaching is regard to conditional of Baptism, which also applies to Confirmation and Holy Orders. If I understand you correctly, you would have the SSPX cause very great injury to the sacrament, automatically abusing it as a rule, with the idea of automatic conditional ordination:
"In this connection, however, there are some matters, in which, to the very great injury of the Sacrament
are of almost daily occurrence, and which therefore demand the diligent attention of pastors. For there are not
wanting those who think that no sin is committed if they indiscriminately administer conditional Baptism.
Hence if an infant be brought to them, they think that no inquiry need be made as to whether it was previously
baptised, but proceed immediately to baptise the child. Nay more, although they be well aware that the Sacrament was administered at home, they do not hesitate to repeat its administration in the Church conditionally, making use of the solemn ceremonies of the Church.This certainly they cannot do without sacrilege
and without incurring what theologians call an irregularity.
According to the authority of Pope Alexander the conditional form of Baptism is to be used only when after dueinquiry doubts are entertained as to the validity of the previous Baptism.In no other case is it ever lawful to administer Baptism a second time, even conditionally.