First of all you probably should learn to read and not draw conclusions based on misquotes or misunderstandings of certain statements
Secondly it is not because there is a Mac OS X beta that we are running it.
Thirdly if a widely trusted and used MTP application works for all MTP devices out there, and also works for us why would we not use it?
Four, Apple did broke this widely used app...
...most likely on purpose to annoy owners of non-apple products and give their fanboys something to brag about. (Maybe because most Android and WP phones, a shitload of non-apple music players, etc use MTP these days and they hope this will force people to buy Apple gear?)
Don't you think we noticed it was broken, but what could we do? Beg Apple to do the fair and honest thing? Develop a client for an OS nobody knows anything much about out of the blue a few weeks before release?