I don't think anyone is hailing the US carriers as the holy grail. It's just that CX has gotten so bad that US legacies start to look compelling. No thanks to all the company loyalists in this asylum working their G days and trying desperately to save the company 100kg. You guys are like abused women blaming yourself (or the AOA) for your abusers indiscretions and always coming back for more in hopes that it will get better. Wise up! It won't.
US carriers are proper seniority airlines with proper contracts and labor protections, but they are far from perfect. You won't be sacked for "no particular reason" but may get furloughed if the economy goes south. Of course, there's nothing to stop CX from having redundancies either except history. If you take a good look, it's obvious that CX is departing from its proud past on many fronts these days. Redundancies could be yet another down the road.