@Maria969, that's a great point you are raising: much better if Airbnb would set a rule such as 20 days stayed, which you would have easily achieved. so hosts with 10 one night stays can get it, but not you, I understand your frustration!
But let's put it into perspective: Superhost status is something that Airbnb is tempting hosts with, as if it carried some distinction and extra benefits and or "payoffs". I am superhost, and I can only tell you that perhaps it satisfied my ego for 5 minutes to look at that little badge next to my profile picture , but really that is all it was/is!
Instead, chasing those 5 star reviews to get superhost status often leads to anxieties and stress in hosts. I see it here every day when hosts get upset about their reviews and star ratings. Makes hosting no fun anymore! I have even seen a post here where a host consciously said that he doesn't even want it, for those reasons.
so what really are the benefits:
1.) supposedly you get through to Airbnb faster when you call in, as they recognize your number. At one time, some said that there was a special call in number for superhosts, I never got it. I also have not had the need yet to call Airbnb. To me, a good host, not to say superhost, knows all the Airbnb rules, is an entrepreneur and takes care of little problems along the way, so how often would one really need to call Airbnb?
2.) second benefit is that after one year of being superhost, you'll get a voucher to use for an Airbnb stay. Yes, I am looking forward to that, but can't testify to it as I don't have it yet.
3.) Some hosts think that guests would pay special attention to superhost status when they book - wrong, most guests don't even know what it is and don't care! they just want the place they selected. So you are NOT losing any bookings or advantages you think a superhost might have.
4.) Also, Superhost status has no influence or advantage in your placement in the listing pages of your town. Maybe it had at the beginning, but not now. One of the major factors for good placement is if you have IB in place, but that's another story. simply put, placement in the listings is not influenced by superhost status.
5.) So it comes back to one's ego, feeling "special" if you have it. I don't want to knock it or be too cynical, but that's about it. In my opinion, to chase superhost status and often get frustrated about it, is just not worth it. Better to just enjoy hosting and not be driven to have to get those 5 star reviews.
Good luck to you - and happy hosting!