The cause is more just "not having enough bits". UUID is 128 bit. You're not running out even if you use part for timestamp, the random part will be big enough.

Like, it's a valid complaint.. just not for discussion at hand.

Also, we do live in reality and while having entirely random one might be perfect from theory of data, in reality having it be prefixed by date have many advantages performance wise.

> Permanent identifiers should not carry data. This is like the cardinal sin of data management

As long as you don't use the data and have actual fields for what's also encoded in UUID, there is absolutely nothing wrong with it, provided there is enough of the random part to get around artifacts in real life data.