[kazinator]

The issue means you cannot broadcast the link to people (for instance, plant it on some project dashboard, or paste it into a Slack channel), and then select who gets access. You cannot revoke 100% of the access from someone to whom you've given the link.

The reason you've been given sounds like something frowned upon in HN: a shallow dismissal.

Even if we accept their reasoning, there is still something wrong: users don't know about the behavior. There is no "warning: sharing a link to someone gives them a high resolution preview of a page of the document, which doesn't require permissions". It's not what you would assume in a document sharing system that has permissions.