She's Ozzy's manager, and whether you like him/heavy-metal or not, she managed to turn a guy who nobody thought would even survive outside of Black Sabbath into a huge solo artist in his own right.
It is one of those tough questions but nobody can really say whether Ozzy would have been as successful as a solo artist had it not been for Mrs. O's very shrewd dealings and marketing.
So its ok to be a nasty , vile piece of work so long as you turn a drunken/druggie into a successful solo star.....wow some people reasons for admiring nasty people are indeed strange.
The comment you highlighted about Sharon being Ozzy's manager, was in reply to someone who asked what credentials she had to be an XF judge. Read the whole thread