What counts as a profile for "Don't show to existing profiles" in popup logic?

Hi! I am wondering what counts as a profile when using the “Don’t show to existing Klaviyo profiles” in popup triggering logic. Since we’re integrated with Shopify and every Shopify user creates a new Klaviyo profile, does that mean that any current shoppers who aren’t subscribed will never see our form? Or does it specifically mean opted-in profiles are being excluded?

How are suppressed profiles treated?

The help center documentation doesn’t specify any of this info as far as I could find.

Thanks!