Without the proper authorities in check how does a bunch of lay people discussing the matter accomplish anything.
Part of it is doctrinal, part is theory. The Church has YET to decide the matter, so there's no "proper authorities" to speak of, except the Saints and a few statements from Rome. With research and time, you can pretty well determine the parameters of the question (i.e. Saying "this" is going too far into heresy; saying "that" is an acceptable theory).
The whole debate can be boiled down to this:
If one looks objectively at EENS, the reason why it has been thrice-defined is because it is THE DOCTRINE which stands in the way of a global religion, new-age-ecuмenism and antichrist. It is also THE DOCTRINE which V2 changed the most...in prep for their V2 religion. It is also THE DOCTRINE which we humans have the hardest time of, i.e. sentimentality and also the mystery of salvation (i.e. understanding God's mercy/justice).
Fr Feeney was fighting V2 errors in the 40s/50s before V2 even existed. Then V2 comes along and basically says "universal salvation is ok".
1. Most Trads say Fr Feeney was wrong - i.e. his fight against universal salvation was wrong.
2. Most Trads say V2's universal salvation is wrong - i.e. implicitly agreeing with Fr Feeney.
3. Most Trads don't see the contradiction.
1. Fr Feeney said that non-baptized persons who wanted baptism but die beforehand do not 100% go to heaven, because it's not been defined. We don't know. Probably Limbo.
2. V2 says that non-baptized persons who wanted baptism are saved.
3. Trads reject V2 as error.
4. Trads also reject Fr Feeney as error.
5. Trads say V2 was too lenient (i.e. non-baptized are saved) but that Fr Feeney was too strict (i.e. non-baptized go to limbo). So where do they go???
6. Or...Trads say V2 was wrong but still agree that non-baptized are saved, and falsely think they are Traditional, even though they accept V2 heresies.
The contradiction is immense.