He's told me that his reason for fading was because the Society was trying to convince him that the brothers and sisters, the organization was his family, instead of his own worldly blood family.------Jules Saturn.
Your grandpa was right to object to this as this is in fact one of the signs of a cult - substituting an acritical family for your own biological family.
As has already been stated, DA is playing by their rules.***** It allows them to label you, demonize you and treat you as the equivalent of being DFD so bear this in mind. Some persons who DA want a clean break and are able to deal with the aftermath; they usually have a social network for support outside the org, they may have non-JW family & friends who will support them.
You may find this Exit Guide from another ex-JW forum to be helpful:
https://www.reddit.com/r/exjw/wiki/exitguide
Best wishes.
*****Freedom FROM religion is a basic human right as per Article 18 of the Declaration of Human Rights. So don't feel pressured into believing that you have to DA. DA is a WT requirement, it's not something which you have to do. You should be free to join and leave a religion as you like, but the WT does not recognize this.