@Rachael26 and @Eiley0The key here is whether the guest has set the IB filter in search to ON or OFF.
With the filter ON, your listing will not appear at all to anyone who is not logged in (even if they meet the requirement, without being logged in, the system can't tell if the guest meets the requirement) or a guest who is logged in but does not meet the requirement.
Only guests who are logged in and meet the requirement will see your listing with the IB filter ON.
With the IB filter OFF, only those who are logged in and meet the requirement will see your listing as an IB listing and will be able to book instantly. All others will see your listing but without the IB icon, meaning that they would have to send you a reservation request so you can decide if you want to host the guest or not.
@Eiley0 No, I'm not saying that guests will not be able to see your listing at all. Rather, with the requirement to have recommendations from hosts, only guests who qualify will be able to see your listing in search results when the IB filter is set to ON. (I.e. guests who want to book instantly.) With the IB filter set to ON, there is no point in showing an IB listing to those who don't qualify.
So let's say I'm a first time Airbnb user and I want to book instantly a listing. I do a search with the IB filter ON. Since I don't have any reviews yet, I don't meet the requirement for recommendations from hosts. The only listings I would see are those IB listings which do not have the requirement. With the IB filter OFF I would see all listings that otherwise meet my filter selections. Those listings with IB enabled without the requirement will still show as IB listings. Those IB listings with the requirement will still be available for me to book, but I would have to send a reservation request instead of being able to book instantly.
I know this is confusing, so please let me know if you have more questions.