Someone giving you a reason and you not “agreeing with it” or thinking that it is “judgemental” does not mean they didn’t give you a reason, it means that you weren’t prepared to listen to or acknowledge the reason.
If there are “two sides to this” then please explain what the other side is, because from what I have seen, those of us who’ve had parents who were so abusive that it’s been necessary to cut off contact with them have only done so after years and years of trying to reset the relationship and desperately wanted it to be healthy and respectful but the parents in every case I know of personally absolutely refused to engage in this, refused to be honest about what happened, invented false realities and claimed that their imaginary version of events in which they are of course blameless is just as valid as what their child has told them about their memories and their actual experience of childhood. The parents are typically defensive, self-justificatory and angry with the child for having the audacity to criticise them, and try to gaslight the child telling them things like “recollections may vary”, trying to invalidate that the child is telling them that their childhood was miserable and that now, as an adult, they will no longer tolerate being treated in the same way. This is often met with astonishment and fury, rather than listening to their child and being horrified that they’d hurt them so badly and wanting to make amends, which is how any normal parent would react to their child telling them that they felt like this; they’d want to understand, to repair.
The parents generally show no remorse, refuse even to acknowledge what they have done, and continue with their denial and deflection of blame for their behaviour onto their child, who was a minor at the time this took place (the worst possible thing to do because to do that to someone who has been scapegoated throughout childhood again as an adult is re-traumatising and undermines any self-repair they have done to build appropriate boundaries and self-worth).
In my experience it is almost always these types of people who refuse to engage in any self-reflection and think it is beneath them to apologise for anything who try to claim they have “no idea” why their children no longer speak to them at all, or have cut contact to an absolute minimum, because any normal parent would be horrified to find out that their child felt like this about their childhood and rather than trying to blame the child to protect their own ego would be doing everything possible to comfort their child, apologise, and try to make amends. Those parents aren’t the ones who tend to get cut off entirely.
What is the mysterious “other side of the story”? It would be very interesting to hear it. Tell us some stories of the specifics of what happened as the OP asked in her original post, about how your relationship with your children was wonderful and then one day, bizarrely, when you’d always been loving and close and supportive and kind and not remotely abusive to them throughout childhood and adulthood and yet they suddenly decided to cut off contact with you forever? I would genuinely be interested to hear these perspectives, but as I said earlier I highly doubt that any such stories will be shared because somewhere deep down even those who try to convince themselves of the false narratives they’ve constructed where they are the victim know damn well exactly why their children no longer talk to them.