Other reasons: - They have only just finished deprecating 32-bit x86 instruction set support in Catalina. Now there is space to support another instruction se

Other reasons: - They have only just finished deprecating 32-bit x86 instruction set support in Catalina. Now there is space to support another instruction set, as supporting 3 at the same time would be more expensive - The patents on AVX are due to expire, making x86_64 emulation a possibility, see https://news.ycombinator.com/item?id=14523587 https://news.ycombinator.com/item?id=14523587