As to your justification, I disagree. Had the hierarchy permitted indult priests to disagree and speak out against errors they perceive in V2, the justification for SSPX and Resistance parishes would not be there IMO. The point is resistance to error and access to the means of salvation and tradition: if the hierarchy permits resistance, and access to the traditional sacraments, there is no need to resist in a divided and separated entity of Resistance, resistance already available without the rent of division.
Hello DR-
Some more thoughts:
1) Regarding your hypothetical, why would the hierarchy permit resistance to itself?? The reality is that on the one hand, they have censured those who have attempted to, and on the other hand, instituted controlled opposition to reintegrate former resisters (as mentioned in my previous post). It would be like inviting burglars into your home. This is what makes the delusion of converting from within a naive pipedream (+Fellay/Rossiniere).
2) Lefebvre did not say it was a strict duty to remain independent of the conciliar church
for so long as they refuse to let us criticize it. He said it was a strict duty for every priest wanting to remain Catholic to separate himself from this Conciliar Church for
as long as it does not rediscover the tradition of the Church and of the Catholic Faith.
In other words, it is a different (conciliar) religion, and one cannot join a conciliar church without leaving the Catholic Church.
By all means, resist, condemn in season and out of season, but for so long as this counterfeit religion (with its counterfeit rites, catechisms, morals, canon law, etc.) remains, it places souls in grave spiritual necessity, and separation will be necessary to keep and protect the faith and avoid contamination, or slowly, slowly one will lose it (exactly as Cardinal Cottier/Rome have desired).
Which is all another way of saying souls are still in necessity, whether preaching/teaching against errors is permitted or not, and it is that necessity which compels independence from those who perceive the threat.