Interesting. Removing them from Outbox/Inbox sections won't remove them from your profile. It only affects the Outbox clients. So, you can just choose the ones you trully trust for Home and Inbox.

The General Relays list is the kind 3 for the old clients out there. That list should follow the old model.

Amethyst uses the General Relay section to let you authorize connecting to relays to download posts. It will recommend adding based on the inbox/outbox list of your follows.