...“in big Cortex-A cores.” ARM designs both the architecture specification and some reference designs. 32-bit support has been an optional part of the specifi

...“in big Cortex-A cores.” ARM designs both the architecture specification and some reference designs. 32-bit support has been an optional part of the specification since ARMv8 in 2011. The article you link is saying that ARM’s Cortex-A reference designs will no longer include 32-bit support, which has nothing to do with Apple since Apple uses their own custom designs. Apple dropped 32 bit support in their own designs in (IIRC) 2016.