You and me both. I went down the Dimond rabbit-hole recently and came out questioning a lot of things to the point that I don't care to get caught up in any of the various trad group politics anymore. I want to be a Catholic who follows Catholicism, not the Catholicism interpreted by [insert trad group here]. 

DECEM: I think Hoffman makes a strong case in the book that some of the Renaissance popes opened themselves up to the spirit of the Renaissance, an opening that foreshadowed the aggiornamento of John XXIII I'm afraid.

The problem is the copernican revolution that seeped into, and flowed out from, the magisterial offices of the Church, like a slow poison. Our Cassini oft writes about the U-turn of the popes, when they took Galileo off the Index and allowed copernicanism to be taught, comparatively, in seminaries and universities.

This is absolutely the beginning of the rot.

Hoffman insists the problem is usury. I insist the problem is copernicanism.

The hierarchy doesn't have to explicitly teach heresy to weaken, over time, the Faith of Catholics. Mere neglect, omission, and giving, as it were, a certain place to error is sufficient to set a black fire in the bones of the Militant Church.

DL pegged the practicality. What he says is eminently sufficient: "The See is vacant, but the jist of it is, just do what you can to be a good traditional Catholic in these times. Don't get hung up on the novelties or puritanism of other trads or trad groups."

That being said, my many years of research has given me an understanding of how to be a faithful Catholic that avoids unnecessary distractions and positions. Had I not looked into matters so diligently, I may never have arrived at the same conclusion as DL. We live and we learn. It's not easy being a Catholic right now. It's a heavy Cross. 

Are there no priests that can be trusted? How can the Church teach if nobody actually has it right 100%?

So then where is the actual unity of the Church, right now, today, then?

.

The unity of the Church consists in three things:  unity in faith, in law, and in liturgy. Traditional Catholics all have exactly the same Faith, have the same sacraments and Mass (the differences between the John 23 Mass and the Pius V Mass are minimal), and we all follow the law of the Church and have the intention to submit ourselves to its lawful authority insofar as we can (there are different interpretations about how or whether that is possible, but the intention is exactly the same in all of us).

I think people make far too much of the differences among traditional Catholics and not nearly enough of what we have in common, and not nearly enough of what separates us from the modernist Vatican 2 sect.