I've been in Sharon's position, albeit on a much smaller scale. My DP was well known in the local community, a flamboyant character, and i was told early on in proceedings by other people close to him that I had to remember he wasn't just mine. So, a spectacle was had, horse drawn hearse and all, and I essentially became the stage manager. I just had to accept it "wasn't all about me", and I was after all, only the widow. About a thousand attended his funeral apparently, though I started drinking neat vodka at breakfast time, so it's all a bit of a blur.
I think people underestimate how difficult it is to "take control" and keep things respectful in these sort of circumstances, due to external pressure. Public figures such as Ozzy and many who've gone before will attract an element of three ring circus because that's how they lived and they made their living as public property. Whether people like it or not, there are expectations.
Ozzys family might be cringing inside, or the process might be comforting, only they can know, and it's nobody else's business.
But if it's a public situation, people are going to film and photograph. It's inured now, whether we like it or not, and I'm sure the family won't give a flying fuck one way or the other.
I just hope Sharon gets some breathing space after. Being the widow of someone even slightly well known in a relatively small community is a most bizarre experience, so how it is for her I can't fully imagine. But, every grief is unique and I think while it could all be considered distasteful to film etc, in Ozzys case it is a reflection of how he lived.