She's not wierd. She is a fame whore.
There are two types of people in the public eye. Those who do their thing and those who scream "LOOK AT ME!!!!"
Talented people don't need stunts, or to court controversy. They don't need to scream. They just do what they do and what they do shouts loudly enough for them. The rest do all they can to nail their Warhol clocks to 14:59 and their efforts become ever louder and ever more desperate. It's easy to impress pubescent boys but that entire notoriety = $£€ is a mincing machine always seeking new fodder.
This is where she differs immensely from GaGa, who understands the intricate pretentions of conceptual art as political/social statements and has manipulated the cogniscentii brilliantly. Cyrus is a machette compared to that scalpel. That is why few roll their eyes when GaGa does her thing. Her point is rarely "LOOK AT ME!" even though that is what her every action demands. Cyrus has nothing else in her vocabulary and the last trick in the box is a pen cam glued to a speculum.
As it is all will soon tire of Cyrus' antics and she has nowhere else to go but into porn or obscurity. We've seen her do everyting else and most people are more familiar with her pubic mound than they are her back catalogue.
I write again. If Miley Cyrus ever put away her cunt the world would forget her in a few moments.