They aren't totally made up, but they are deliberately obtuse. Hotels are ultimately the ones that control the availability of rooms sold on the platform. It is

They aren't totally made up, but they are deliberately obtuse. Hotels are ultimately the ones that control the availability of rooms sold on the platform. It is a common tactic to only list a handful of room nights until those are sold, then add more. This means that all of their rooms always have the urgency messaging. The larger chains do this at scale and across multiple third party sites. So Booking isn't really lying, those numbers are "true", in that there are "only 2 rooms left" but they don't mention the hoteliers' smarmy behavior in abusing the urgency messaging about the availability or their own complicit participation in the lie-by-omission.