Refer to this post and this post.
3) That a pope who is even a manifest heretic is not deposed ipso facto and cannot be deposed by the Church.
“Number Three is false, because, (as I have proven in Volume One), it is de fide that a public heretic is severed from membership ipso facto by the very nature of heresy, and loses office ipso jure; but a public heretic who remains pope while no longer a member would still be the chief member; and he would still hold office even after losing his office ipso jure. The consideration of these absurdities proves that the opinion is against the Catholic faith; yet, this opinion is still popular among many ignorant Catholics.”
Kramer, Paul. On the true and the false pope: The case against Bergoglio (p. 51). Gondolin Press. Kindle Edition.
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