The only real hermeneutics prescribed by the Bible is those innate to the Spirit of Truth. All else are man-made and therefore, unreliable.
If a believer is stuck in some ivory tower of theosophy, then I agree, they have missed it. The faith is to be practiced and lived, not considered and mentally dissected.
However, Jesus did say He came to bring a sword. There needs must be a certain level of division. That which is holy should be divided against and from that which is profane. False doctrine must be flagged and rejected and so, adherents to false doctrine automatically separate themselves from believers of true doctrine.
It HAS to be so, so that, as Paul wrote in
1 Corinthians 11:18-19, we can tell the heretics from those who are approved in doctrine.