That is not the point, and your private interpretation which is not even official exegesis, wrests texts to teach 2Pt. 1:20 is about interpretation of Scripture apart from an supreme infallible magisterium, when it is actually is setting forth Scripture as the standard , and makes you a false teacher!
The context of 1Pt. 1:20 is clearly that of Divinely inspired prophecy , which is not a result of mans interpretive wisdom, but instead such were found "Searching what, or what manner of time the Spirit of Christ which was in them did signify, when it testified beforehand the sufferings of Christ, and the glory that should follow." (1 Peter 1:11)
In contrast to the product of man's wisdom and false prophets and teachers, Peter tells us, "We have also a more sure word of prophecy," "for the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost." (2 Peter 119,:21)
This sets forth Scripture as the supreme authority, not the assuredly infallible magisterium of Rome, which like false teachers, takes the danger of individual private interpretation to the corporate level, claiming to be teaching Divinely revealed truths but which are not taught in Scripture. Such as perpetual papal infallibility (which is the epitome of individual interpretation) and that of the magisterium when speaking in accordance with her infallibly defined formula, with the veracity of which resting upon that premise.
But the teaches of which yet can require varying degree of interpretation, even as to what level each teaching falls under, and thus what level of assent is required. Which basically ends up meaning implicit assent should be given to all. Which is cultic, not Christian.
I read your response and am not persuaded. I also note scripture in the follow up epistle by the same author dealing with those who wrest the Scriptures to their own destruction. I compare and contrast this with the case if what heresies could infect the churches of the holy catholic apostolic church that Jesus build on the apostles and prophets, himself being the chief cornerstone. How could sheep follow a wolf in sheep's clothing unless said wolf was misinterpreting the scriptures to lead them astray. With the thousands of denominations, sects, and even virtual websites that cloak the background and ordination of the teachers, I can see how sheep are led astray by false teachers who misinterpret the scripture, Knowing this first, that no prophecy of the scripture is of any private interpretation. 14Wherefore, beloved, seeing that ye look for such things, be diligent that ye may be found of him in peace, without spot, and blameless. And account that the longsuffering of our Lord is salvation; even as our beloved brother Paul also according to the wisdom given unto him hath written unto you; As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction. Te therefore, beloved, seeing ye know these things before, beware lest ye also, being led away with the error of the wicked, fall from your own stedfastness. But grow in grace, and in the knowledge of our Lord and Saviour Jesus Christ. To him be glory both now and for ever. Amen.