Mac's are not compatible with NTFS drives either, does that mean that NTFS is at fault? Or mac?
OSX does not support MTP out of the box.
Connecting to a Macintosh computer via USB - Android OS Help
And here's why they did it.
Ice Cream Sandwich explained: MTP - what is it, why use it, and how to set it up | Android Central
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We didn't do this because we wanted to use ext3 (although that is a side benefit.) We did it because we wanted to be able to merge the "public shared storage" (i.e. for music and photos) with the internal private app storage.
We got tired of seeing OEMs include many GB of internal storage for music, while users were still running out of space for apps and data. This approach lets us merge everything on one volume, which is way better.
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Lets go ahead and take this one level deeper, since you argue that the mac came out before the sg3, so it should be compatible, mtp came out before the current version of osx, why isn't it compatible, it is a standard afterall.
So we should stay technically behind because apple refuses to let their computers connect to digital cameras, mp3 players other than their own brand.
Yes the razr supports it, but then the file system is exfat, and I've had both the sg3 and razr, and the sg3 runs circles performance wise to the razr, and I'd rather run with ext3 vs exfat in my phone.