Didn’t notice this in the specs. Ark conveniently only lists stuff that is supported (so you don’t see stuff that is missing).
Yeah no real reason…the cores are capable of AVX-512 and max 8 cores are hardly a competition for Xeon Scalable. If anything, it would make the platform more competitive vs. AMD. Maybe Intel prefers “these are not the instructions you are looking for. Go buy AMX”. Don’t remind customers of AVX512 or they’ll miss it elsewhere.
If I had to guess, I would assume Intel did it out of laziness; they probably wanted to use their existing consumer LGA1700 ucode repository instead of making another one that needed to be developed and verified.