There is no such thing as absolute privacy. By virtue of being a web-hosted service, you will need to interact with the end server, and that already has the potential to expose details like IP, referer, user-agent, etc.

The wording around designing and limiting collection is acknowledging this inherent problem and letting the user know that they’ve done their best to prevent malice.

It’s not weasel wording except for anons who like hating on the internet.