Likely the latter. RiF probably uses the free x amount of uses of the API while logged in users are directly seen as "premium" API users.

But other than lurking and manually searching the subs I see no reason to keep using RiF and generate traffic to them.

I hope Lemmy keeps growing but currently it's a sheer difference in content between here and Reddit.

All I get when I open rif is an infinite loading wheel.

I also can see all nsfw/normal posts in the rif golden platinum. The free tier explains the normal posts but it is weird that we can still see nsfw ones.