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A lot of the comments are about spamming your contacts, but I assume the common reason is to connect you with people you already know - if a phone number is in your address book, and that number is associated with an account, it can suggest that person to you as a friend.

Is there a better way to make that connection without exposing the actual number?

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I'd say by hashing but unfortunately the phone number space is too small. Maybe however Apple's Airdrop to contacts thing works? It's hashing with extra steps AFAIR.

I don’t want suggestions. I’ve never needed suggestions on any social platforms I’ve been. I usually just ask my friends if they’re on it and what’s their handle.

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