I don’t see anything particularly wrong with that as long as their business model isn’t ad based. Plus, it’s their MVP, so it’s probably a legal template to protect themselves more than their actual intent.
We've amended the policy, and added this statement so things are clear.
Sundayy does not, and never will, rent or sell your personal data to any third party for any purpose (including advertising or marketing purposes) nor do we, or will we, permit targeted advertising on our Service. We only share personal information with third party service providers under limited circumstances as described in the section below.