TL;DR: Firefox switched to an undocumented kernel lock function and flags.
Which is, of course, a pretty bad thing, and an especially stupid thing to recommend, even with caveats! I expected a whole bunch of warning signs and even a "haha only kidding", but no, the author seems pretty gung-ho about this approach.
Apple is very happy to change and deprecate such things with no announcement. I don't know that anybody who'd follow such advice would also be careful enough to implement regression testing, and how reliable such testing can be!
Perhaps they can help pressure Apple to make such a useful lock function official.
Which is, of course, a pretty bad thing, and an especially stupid thing to recommend, even with caveats! I expected a whole bunch of warning signs and even a "haha only kidding", but no, the author seems pretty gung-ho about this approach.
Apple is very happy to change and deprecate such things with no announcement. I don't know that anybody who'd follow such advice would also be careful enough to implement regression testing, and how reliable such testing can be!
Perhaps they can help pressure Apple to make such a useful lock function official.