Sectarians vs. Orthodox people are like people doing SEO to each other.
If the sectarians believed in the Holy Tradition, in the Saints, they would have a basis for discussion with the Orthodox.
In vain do I say, “This is what Holy Tradition says,” if it means nothing to them.
Likewise, SEO discussion. If I say “That’s what Moz.com says,” if it means nothing to X, that he knows better, we have no way of talking.