The writers of those posts greatly err. Doctrine is not a bunch of bickering squabbles. The doctrine of Christ defines him and what he wants us to believe.
Did Paul say dont worry about doctrine? Just say you believe in Christ?
10: Now I beseech you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing, and that there be no divisions among you; but that ye be perfectly joined together in the same mind and in the same judgment.
1 Cor. 1:10
All are to believe the same truth.
TRUTH MATTERS