There is no point for @loops to support uploading your contact lists for Discovery.
Not only is that being phased out partially on iOS, but it's a huge privacy concern.
A better idea is to allow you to login to your Mastodon/Pixelfed/Akkoma account and upload your following list (which is usually public) with strict oAuth scopes.
We can make this privacy friendly, and auditable, so you can see we only access/store this specific data.
What are your thoughts?