Actually, the rule you noted has been abolished by the JW.
One characteristic of a false religion is the changes its doctrinal system undergoes in order to “adjust” teachings and prophecies that prove to be false.
A recent example of this was noted in the June 14, 2000 edition of the Times of London.
In an article entitled “U-Turn on Blood Transfusions by Witnesses,” the Times noted that, “Elders have decreed that Jehovah’s Witnesses who accept blood transfusions under life-or-death conditions will no longer face excommunication from their religion.” Paul Gillies, a spokesman for JWs in Britain, confirmed this position.
This “adjustment” in Watchtower Society (WTS) teaching began in March 1998, when the WTS voiced the same change to the European Human Rights Commission.
Additionally, this alteration was made on behalf of JWs in Bulgaria, where their status as a religion was threatened because of their prohibition against transfusions.
Therefore, in order to safeguard its religious status, the WTS did a U-turn on transfusions, allowing JWs to receive one with “no religious sanctions” imposed on them.
These events go contrary to what had been the WTS’s long-standing policy on transfusions, namely that a JW who receives one “. . . must be cut off from God’s people by excommunication or disfellowshiping,” being labeled “a rebellious opposer and unfaithful example to fellow members of the Christian congregation” (The Watchtower, January 15, 1961, 64). This was true regardless of the circumstances.
Many JW continue to look past their authorities that have clearly stated the above "allowing" a blood transfusion under a life/death health condition.
Furthermore, when certain JW go against their own teaching/changes they are no different then a broken synod; they might as well start their own religion.
https://www.catholic.com/magazine/print-edition/transfusion-confusion