It is exhausting to watch apologetics most of the time.
In the comments previously linked, John Parry:
I would argue that none of those were doctrine...The priesthood restriction was a variation of the exercise of priesthood generally and has plenty of historical precedent. We are not taught that the ban was "wrong", but some of the excuses for it were extremely misguided.
From the 1 Presidency circa 1947:
From the days of the Prophet Joseph even until now, it has been the doctrine of the Church, never questioned by any of the Church leaders, that the Negroes are not entitled to the full blessings of the Gospel.
members tend to think they can change what past leaders called doctrine to something that was never doctrine. Also, yeah right, as if "doctrine" is anything but teaching (a belief or set of beliefs held and taught by a Church).
“Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.”
― Carl Sagan, Cosmos