Yep.
My family has done so, on a number of occasions. Generally justified for a number of reasons.
It's a power thing. You have embarked upon a journey they don't recognise. It isn't part of their cosy view of the world. It sets you apart from them, giving you, in their eyes, more significance than they have.
The last time I spoke to my father was 1993. He attacked me in front of my wife.
I had already moved to the other end of the country at that time. My brothers, especially the older, continually turned up expecting hospitality. Eventually, my older brother was very rude to my inlaws so I asked him to leave.
One of his daughters recently wrote to me to invite me to her wedding. I wrote back a long letter saying no and describing in some detail, my life now. I know that will be passed around. At lest it will give them something to talk about and hopefully keep them quiet for a while.
They may be family, but it's your life. Ask youself, what they would do if you tried to radically alter the direction they have chosen.
Seriously, put them behind you.