The Palace have released a certain amount of information about the DoE, presumably as much as they want us to know. Whoever a person is, whether they are a private or a public figure, I find it very distasteful to speculate on the details of their health publicly, for anyone to read, if those details have not been made public. I wouldn't want anyone to talk about me, or any member of my family in this way. Especially someone I haven't met.
Speculating on the detailed nature of a person's illness when those details have not be made public is very distasteful in my opinion. That is not being concerned for their health, its intrusive, although probably unintentionally so. In my opinion.