In my eyes, the fact the UUIDs (or specifically v4, as mentioned in the article) encode no information is an advantage. I don’t think encoding the creation date into the UUID is likely to be a huge security hole, but I can imagine some instances where you would want to keep that secret, or at least not have a good reason to publish it.

I would also argue, strongly, that if you are planning to use the datetime an account/event/item was generated, you should track it separately from the UUID, in a dedicated column.

This isn’t intended to refute the article - it was an interesting read and I definitely learned some stuff, but rather to provide an argument for why you might want to stick with v4.