On the other hand, ecuмenism’s goal is to find the truth in the errors and practically putting oneself on the level of the errors, putting the whole truth on level with error, and thus embracing errors.

Finding "truth" in errors.

"very limited liberty" - "many things we condemned in the Council were not of the Council" "95% of Vatican II"

The neo-SSPX position does not admit the law of the excluded middle.

You cannot say the Conciliar Church is not Catholic, and then say it is not a matter of an existing separation.

If the "official Church" is the Catholic Church, then one cannot say the leaders of the conciliar Church are in schism from it, unless they really are in some sense separated from the Church.  Otherwise the statement is nonsensical.

The essence of the neo-SSPX is false ecuмenism with the modernists, pretending it is possible to have authentic traditional sympathies while being neo-modernist at the same time.  This leads to a dissolution of the SSPX as an integrally Catholic organization.

And we can see already in those associated with it, rapid acceptance of the sort of things the Archbishop condemned: particularly, false ecuмenism with the Jєωs, collaboration with the indultarians, etc.