Yes, Linus Torvalds is not exactly modest in his wat to out things, but that's his latest statement on AVX-512. Torvalds is the man behind GIT and Linux development.  

"I hope AVX512 dies a painful death, and that Intel starts fixing real problems instead of trying to create magic instructions to then create benchmarks that they can look good on."

"I've said this before, and I'll say it again: in the heyday of x86, when Intel was laughing all the way to the bank and killing all their competition, absolutely everybody else did better than Intel on FP loads. Intel's FP performance sucked (relatively speaking), and it matter not one iota. Because absolutely nobody cares outside of benchmarks." 

"Yes, yes, I'm biased. I absolutely detest FP benchmarks, and I realize other people care deeply. I just think AVX512 is exactly the wrong thing to do. It's a pet peeve of mine. It's a prime example of something Intel has done wrong, partly by just increasing the fragmentation of the market. Stop with the special-case garbage, and make all the core common stuff that everybody cares about run as well as you humanly can. Then do a FPU that is barely good enough on the side, and people will be happy. AVX2 is much more than enough," 

Linus commented this in a mailing on the compiler instructions Intel is enabling for Alder Lake (and Sapphire Rapids), Linus Torvalds decided to share a few words. 

AVX-512 Is an Intel Gimmick To Win Benchmarks and should die a painful death