[omcnoe]

All it means is that applications downloaded/installed via Homebrew will no longer be able to bypass the Gatekeeper signing/notarization requirement on Intel platforms (already is the case on Arm).

If you didn't need to install a cask with this flag before you won't be impacted by the deprecation.

[EasyMark]

I think that homebrew will be removing those that require it as well ( or I suppose you can build from source)