JWs will keep their disfellowshipping ways despite ample objection found within scripture. They'll continue this because the WTS is a cult, saw this short list earlier:
How to identify a Cult:
1) Exclusive. They may say, "We're the only ones with the truth; everyone else is wrong; and if you leave our group your salvation is in danger."
2) Secretive. Certain teachings are not available to outsiders or they're presented only to certain members, sometimes after taking vows of confidentiality.
3) Authoritarian. A human leader expects total loyalty and unquestioned obedience.
The crazy thing is, WTS wrote an article in Awake Janurary 8, 1947 lambasting the Catholic Church for their ex-communication practice calling it, "a pagan practice," and saying, "the weapon of excommunication became the instrument by which the clergy attained a combination of ecclesiastical power and secular tyranny that finds no parallels in history." Then just 5 short years later what do you think the WTS approved as doctrine?
Disfellowshipping. Bunch of hypocrites.