Yes. Notwithstanding those here who deride him, I think Michael has well-docuмented the "Renaissance" as a key point of decline.
Since the Renaissance, the Church has disconnected itself from science, politics and the problem of the Jєωs. The last time Rome mentioned the danger of the Jєωs was in 1555 with a papal bull entitled "cuм Nimis Absurdum". Talk to a run of the mill trad today about the Jєωs and although you will find, with some difficulty, books by the Rev Denis Fahey and Mgr Jouin, you wont find any encyclicals to back you up. Most of these trads will look at you as some kind of kook, after all, it never concerned Mgr Lefebvre.
Same with science. There are are no Encyclicals condeming Darwin. Once again you are on your own.
You have however the the conciliar E Michael Jones and the conciliar Kolbe Center to help you try to persuade your fellow trad pew sitters, as no SSPX book touches on these subjects honestly.
And it's too easy to blame everything on Vatican 2, when well before then, in 1892 the Church told French Catholics to accept the Revolution. This only resulted in the state secularising the whole of France in 1905.
It's easy to blame Francis having abandoned the Chinese Catholics, but how is that worse than Pius XI abandoning the Cristeros?
The conciliars have Mgr Vigano, who instictively understands the danger of the covid con and the great reset, whist the trad bishops (except Mgr Williamson) follow the Vatican line.
But Mgr Williamson, for some really bizarre reason, doesn't find it odd that many are appalled about his pedophile roomate or his support of Carlos Urrotigoity.
So anyone from any trad group that claims that he is following the path that all must follow, has a blind spot. No group is in a state of grace and only God can sort this mess out.