Don't you see how easily a Protestant can use that to justify their own views, though? "We have Jesus as a High Priest, we don't need your earthly priests and rituals. The Church has always had its High Priest in Heaven."
It seems obvious to me that the priestless Old Belief was predicated on the idea that the Parousia was literally a couple of years away and Alexis I was the final Antichrist. It simply was not designed to become a normative way of life. Trying to live it as such is like endless spiritual triage.
They've said the same things about early Christianity: that it was based on the expectation of imminent parousia. I don't find that implausible: the Christian way of life was never "normal".
Only it is contradicted in St. Peter, viz.: "There shall come in the last days scoffers, walking after their own lusts, and saying, Where is the promise of his coming? ... But, beloved, be not ignorant of this one thing, that one day is with the Lord as a thousand years, and a thousand years as one day." Be careful listening to "they," who have so often been enemies of the Church.