Please present evidence of a theologian in the last two to three hundred years that holds your position.  They can't all be wrong.

I ask you again in response to the following post of yours to provide evidence.  Every time I ask you for evidence you don't provide it.

https://www.cathinfo.com/crisis-in-the-church/question-on-material-vs-formal-heresy/msg1004671/#msg1004671

Interestingly enough I was watching the Dimonds video on the co-redemtrix tittle again and at 26:07 he starts talking about the distinction between what is notoriously heretical and what is heretical in so far that it contradicts positive dogmatic teaching (I am unsure if this is also called material heresy).


https://youtu.be/O5QGtuPxOV0?t=1568

I don't want to watch it, but I do want to comment on a related matter. 

Catholics can sin against the divine virtue of Faith in three ways:

1) venial sin - and the person retains the divine virtues of Faith and Charity.
2) mortal sin - where the person loses the divine virtue of Charity and deserves hell, but remains Catholic because he retains the divine virtue of Faith.
3) mortal sin - where the person loses the divine virtue of Faith (and also Charity) and thus ceases to be Catholic.

The important part about this is, you don't know what things in the Catechism are at what level. You piously consider it ALL sacred.

It's for the Confessor to determine what level the sin is at.