I think this is another aspect of the 'flatification' of the whole UI style as it's redone in the Windows 10 style.
I think this is a step backwards in clarity and usability all around.
I agree. The new icons make the user interface harder to use. The folder icons in the library now look similar to the individual VM icons. Just because Microsoft decided to make a poor visual design decision doesn't mean that VMware needs to do the same.