I am not part of the App Review team, but the only accepted way to use a customer service flow (like contacting the user support desk) for account deletion is if your app is used in a highly regulated industry. I was told by App Review that the fields given as examples in App Store Review Guideline 5.1.1(ix) - highly regulated fields (such as banking and financial services, healthcare, gambling, legal cannabis use, and air travel) - are the only fields that Apple considers to be highly regulated. As long as Apple considers insurance to be a financial service, I would think that your plans for account deletion would be acceptable. I'd email Apple directly to confirm just in case.
Topic:
App Store Distribution & Marketing
SubTopic:
App Review
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