The below video Fr. Hesse begins talking about an and old rite bishop who ordained him in the new rite, and a new rite bishop who ordained priests in the old rite. Then you can jump to about the 7:48 mark for a few minutes.
The first 9 minutes, Fr talks about the matter of the sacrament (i.e. laying of hands) which even the Anglicans do. But this does not suffice for validity. So minute 1 - 9 is irrelevant.
At the 9:45 minute mark, Fr begins to talk about the form of the sacrament (i.e. the rite itself) and these are the problems:
1. His main argument begins at 14:00. He admits before this that Pope Pius XII's declaration on the validity of Holy Orders is infallible.
2. But, Fr Hesse says that Pius XII's docuмent only applies to the Latin Roman rite. It doesn't apply to the Eastern rites, or the Greek rites, etc. I agree.
3. Conclusion - Fr Hesse argues this validity standard does not apply to V2 rites, because they are a different rite, similar to the Greek/Russian orthodox (which can be valid).
My comments:
1. At the time Fr Hesse was making this argument (the year 2000), it held more weight because the legal/liturgical status of V2 was still a gray area.
2. But after +Benedict's 2007 motu proprio, the legal status of V2's rites is clear and Fr Hesse's arguments are wrong.
3. +Benedict declared, unambiguously, that the V2 rites are part of the Latin rite (i.e. not schismatic, not a new rite). He said they are a "different usage of the same rite" (i.e. comparing V2 rites with the True/Tridentine Rites of Pope St Pius V).
4. Since +Benedict confirmed that Quo Primum is still in force AND that V2's rites are a "different usage" in the same Latin Roman rite as the Tridentine rite, then both legally and liturgically, the V2 rites fall under the infallible decree of both Quo Primum and Pius XII's validity rules.
5. Thus, the V2 rites of ordination/consecration are both contrary to Quo Primum (i.e. sinfully illicit) and contrary to Pius XII's rules on the sacramental form (i.e. clearly invalid).
6. Fr Hesse's argument that the V2 rites are not part of the Latin Roman rite are outdated and wrong.
I have listened to this talk before, but I didn't re-listen all the way through. From the 15 min mark onward, Fr gives his "proofs" of why the V2 is not part of the roman rite. I think his proofs are outdated based on the clear intentions of new-rome (i.e. pope Benedict's legal docuмent of 2007) and the practical application of new-rome's liturgy (i.e. it has tried to replace the Tridentine rite).
Either way, the argument of comparing liturgies against one another (i.e. Greek vs Coptic, or Russian vs Ambrosian) is only a matter the Church can resolve. We have the infallible rules of Pope Pius XII on the form of the sacrament, and to brush this off and say, "well, it doesn't apply in this case" is extremely bold and not in a good way.