I think to me its so about how preachy it all is. It's summed up by me with

> their goal is to end copyleft compilers.

Copyleft has nothing to do with this. Apple just want to make a better compiler. If a copyleft compiler is thrown by the wayside in the process, or they choose not to release under a copyleft license, that's just collateral.

Stop being so preachy and making Apple out to be malicious. They just don't care.