See there’s the stuff that happened, there’s the version that tankies want to believe (complete denial), which is actually different from the official CCP stance (“necessary and proportionate police action to ensure stability”, with the implication “enough questions, comrade, nothing more to see”), which is different from western public… myth, I have to say. Back when the stuff went down western journalists didn’t know what was happening, there were confusing reports, there were reports of violence, and then there was the tank man – taken the day after (IIRC, but definitely later and no he didn’t get run over). The collective imagination somehow constructed an image of the Chinese army rolling over students. Which is… metaphorically true, but not literally. And then the CCP is using that western imagination to spin their own tale of how the evil west is slandering them.
Not to mention ARM chips which by and large were/are more efficient on the same node than x86 because of their design: ARM chip designers have been doing that efficiency thing since forever, owing to the mobile platform, while desktop designers only got into the game quite late. There’s also some wibbles like ARM insn decoding being inherently simpler but big picture that’s negligible.
Intel just really, really has a talent for not seeing the writing on the wall while AMD made a habit out of it out of sheer necessity to even survive. Bulldozer nearly killed them (and the idea itself wasn’t even bad, it just didn’t work out) while Intel is tanking hit after hit after hit.