Madonna is respected period
Doesn't matter what she's respected FOR, fact is she is the biggest selling and highest grossing female act of all time.
Someone out there respects her even if you don't

And I don't even like her like that

The only thing is with her she doesn't get a lot of respect from her peers, but her music and videos, and the way she pushed the envelope image wise get a lot of recognition.
I don't know why your always trying to minimise someone's impact and influence down to how many octaves they have.