Who cares if they felt a loss? That doesn't give them the right to invade anyone's privacy. People have a right to stop being Online.
There's a decent article called "Parasocial Interaction in the Digital Age"[0] that describes this phenomenon occuring through YouTube, and I would not be the least bit surprised to find that it's applicable to the situation of _why discussed here.
[0] [PDF] https://thejsms.org/tsmri/index.php/TSMRI/article/download/3...
On the internet, anybody can become famous at any time, because the internet is media access. People now become famous without the mask that differentiated their famous persona from their normal life. Giving up fame now requires giving up the part of your normal life that made you famous.
For a much better explanation, see this[1] short video essay.