We could do this, but it would be identical to the existing method:
@available(FoundationPreview 6.3, *)
public static func random(
using generator: inout some RandomNumberGenerator
) -> UUID
I don't think it is typical for us to have identical methods that do the same thing. We could deprecate, but as I talked about in the pitch here, I think it is a good idea to avoid deprecations just for naming reasons.