Yes, Father Chazal is semi-sede (closest to sedeprivationism) despite Meg's gratuitous denials. I have zero issues with his position, and embrace it.
Here's the bottom line in +Vigano's statement, affirming the MAJOR of SVism. This is all I really care about. One can quibble about the "5 Opinions" til the cows come home or debate Bellarmine this vs. Cajetan that. We'll never solve the debate over those details. But whatever "solution" we propose, we simply CANNOT throw the Catholic Church and the Magisterium under the bus as many/most modern R&R do.
This is THE KEY DEVELOPMENT in +Vigano's latest statement --
Is it possible then that the Church has begun to teach error? Can we believe that the one Ark of salvation is at the same time also an instrument of perdition for souls? That the Mystical Body separates itself from its Divine Head, Jesus Christ, making the Savior’s promise fail? This cannot, of course, be admissible, and those who support such an idea fall into heresy and schism. The Church cannot teach error, nor can her Head, the Roman Pontiff, be at the same time heretical and orthodox, Peter and Judas, in communion with all his predecessors and at the same time in schism with them. The only theologically possible answer is that the Conciliar Hierarchy, which proclaims itself Catholic but embraces a faith different from that constantly taught for two thousand years by the Catholic Church, belongs to another entity and therefore does not represent the true Church of Christ.
This is precisely what I've been arguing for years here on CathInfo now. He's also hereby rejecting FrankenChurch theory.