Don't know. It's the whole style. Phrases like "Apple's pathological hatred of copyleft" just don't sit well with me. If you want to educate me: fine, do it. But at least try to avoid sounding like a fanatic.
The implicit assumption you're making is that developers are not making an informed decision already. I reckon that's not the case, and the developers are informed – they just don't care.
Arguments about long-term, abstract concepts like enduring freedom of software, or the risk of patent litigation for using non-copyleft software, are valuable to have. But these things have a limited impact in the short-term, day-to-day work of developers.
We can't take that for granted. I for one found the article very useful and informing, raising my awareness about this next Apple stunt.
> 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.