For what it's worth, I consider none of the aforementioned three devices to contain any artistic value whatsoever. The Apple II is an excellent computer, but entirely unjustifiable as an art exhibit.
I stand by my original statement that anything can make it's way into MOMA regardless of whether or not it's art.
To turn things back to where we started, can you find one article which criticizes MOMA for including an Apple Macintosh along with its Picasso?