Section 132 is typical of the way Smith often "got revelations" from God when necessary. Mormon Presidents still do that.
In 1978, at the height of civil rights enthusiasm, blacks picketed BYU, decrying Mormon racism. The president of the Church, Spencer W. Kimball, received a revelation saying that blacks could now hold the priesthood. For 150 years, Blacks were told they could not hold the Mormon Priesthood until all other races had had full opportunity to do so. Blacks were to be last.
Kimball capitulated to political pressure and "got a revelation" that the time "had now come for blacks."