You wrote:
“The council was not called for “changes”; it was called for renewal and it failed miserably.”
Your viewpoint is irrelevant on that matter. An ecumenical council called for changes in the liturgy. I attend the Latin Mass. I still admit the truth: a council called for changes in the liturgy. That’s just a fact.
My viewpoint is no more irrelevant than yours. If you attend a Latin Mass, you apparently are not following the council’s “call for changes in the liturgy”.
For what good purpose was a council (”to call for changes in the liturgy”) if Pope Benedict would, 50 years later, proclaim the TLM to never have been abrogated? The novus ordo Mass that he now asks for a “reform of the reform”?
Answer: For no good purpose.
However, I am willing to entertain the thought that the council was hijacked for more nefarious reasons than just butchering the Holy Mass.