Agree Casdon. Estrangement has many, many possible causes- just a few- abuse, neglect, betrayal, lies, mental illness, addiction, divorce fall out, mis matched values and beliefs, lifestyle choices, identity issues etc etc. But common to all is underlying conflict and hurt feelings all round.
Only the people involved will understand their own perspective and experience and the circumstances that lead to each of them feeling as they do. Those who chose to cut ties often do so for self preservation when they feel the relationship become toxic or unsupportive, for them.
Most families, thank goodness, and/or individuals experience estrangement outside the media gaze. Very difficult for someone who already in the public eye to have one/or more of their family members reporting their experience/personal views in the media for financial gain or any other reason that so spectacularly shows disregard and lack of respect for how the other is feeling. It doesn't heal the estrangement and evidently is not designed to show their ( supposedly loved?) family member in a good light.
Thus courting the media exacerbates the pain all round and damages the already severely fractured relationship even more. Plus- as we are seeing in this post- promotes endless speculation.... So very sad.