It’s a total non issue for the majority of folks. It requires local access and takes hours under very specific conditions that don’t apply to most people. How often do you run a server that will run arbitrary crypto operations on attacker controlled inputs?

Plus all the secrets in the Secure Enclave are immune to this attack, so your FileVault keys and your Apple Pay cards and all that jazz are completely safe.

It sucks that it exists, and crypto libraries that run on the platform outside of the Secure Enclave will get slightly slower, but no one will notice.