[jandrewrogers]

Unfortunately, UUIDv4 is often specifically prohibited for some sensitive applications due to many cases of broken RNGs undermining the security guarantees of UUIDv4. Deterministic generation plus encryption is a common choice in these cases.

[jrochkind1]

The important point is that UUIDv7 is even worse (and unsuitable) for that application so anything prohibited UUIDv4 for those reasons would not be okay with v7 either!