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Even if, at their worst, Apple is as petty as he’s “heard” (given the FUD surrounding quite a lot of engineer’s), the proper response is responding with less pettiness, not more. It’s reflective of the author’s character no matter how he expressed the tantrum.
An auth strategy based on a Map<String, bool>, where String is a plain-text beacon on the LAN, seems well-worth criticizing.
I may have gotten turned about when trying to understand a few things, my understanding is you dismiss this because you're not sure if one feature uses it? And because parsers can't have vulnerabilities on arbitrary data?