You got upset because I called him a manifest heretic for being a senior offical of the heretical concilar sect.
Absolutely I got upset at that, because it's nonsense.
No, not at all. It's good Catholic tradition to judge manifest heretics as such, pure and simple (see below).
Even if I were to grant that you're correct, that was the past, and he is NOW clearly expressing his regret for having remained supportive of the Conciliar aberrations.
So what? That's why I called him a manifest heretic in the past, and why I do not continue to call him a manifest heretic.
IF someone held an R&R type position where he considered the NO hierarchy to be legitimate, despite their errors, then where exactly is the "heresy" in remaining in communion with them?
Who? In which way did Viganò resist? He went with the heretical robber council, with the bastard mass, and made a carreer in the sect of the new false pentecost. He obediently followed his superiors, and did not protest, let alone resist.
I'm not seeing heresy.
Viganò does.
Archbishop Lefebvre remained in good standing as an Archbishop of the Novus Ordo for about a decade after Vatican II concluded. Was Archbishop Lefebvre a "manifest heretic" between 1965 and 1976.
If it should be the case (which I cannot and do not confirm, so just for the sake of argument) that Lefebvre did neither protest nor resist from 1965 to 1976, and just continued in his office(s) and went along with the newly founded conciliar sect, then I would say that he has been a manifest heretic, from 1965 to 1976. If he then started to protest and resist, then he was protesting and resisting that bunch of manifest heretics of that sect.
Whatever between 1965 to 1976 really happened, at some point Lefebvre called the bastard mass bastard mass, the conciliar sect conciliar sect, religions liberty a condemned false idea, etc. pp. Whenever he may have started to do such things, he manifestly was not one of that bunch of manifest heretics of that sect.
You seem to have different criteria than I have for judging someone as a heretic. The facts and works of Viganò are undisputed. He himself says that he saw it as his obligation to follow the heretical sect which he now calls "parallel church".
Please note that I call manifest heretics manifest heretics or short heretics, while you talk about material/formal heretics. I use the approach of St Robert Bellarmine, who uses the traditional concept of a manifest heretic:
For although Liberius was not a heretic, nevertheless he was considered one, on account of the peace he made with the Arians, and by that presumption the pontificate could rightly be taken from him: for men are not bound, or able to read hearts; but when they see that someone is a heretic by his external works, they judge him to be a heretic pure and simple, and condemn him as a heretic.
A manifest heretic may or may not be a heretic. The point is: I should act as if he was one. The judgments of the Church in that respect are not infallible, and are not required to be infallible. Same is true for the judgments of simple laymen like you or me. Moral certainty is enough to judge someone to be a manifest heretic. If it walks like a duck, etc. It is not generally "safer" to not judge someone as a heretic. If you hesitantly fail to do so, you may e.g. end up taking part in a sacrilege, and be guilty of not having used your God given reason to avoid that.