Hello,
Sending friend requests or having friends in game shouldn't be part of the achievement list. It gives an unfair advantage to people who are more social and will block people who are less social.
For example, I don't know anyone IRL interested in LW, I don't have friends here and may never get one. (same problem as with the referral exclusive companions) My achievement page will be blocked into limbo for no reason.
Another thing I fear could happen is predatory practices from people who will sell their services as becoming friends with people for a hefty price.