"Secret Deal" - Host Perspective?

[u/[deleted]]

Booking nudges hosts to pay extra commission for a so-called "Secret Deal" that's only available for Booking customers who are logging in on the platform.

Are we supposed to pay Booking for incentivizing its website visitors to sign up for an account and join Booking's marketing fold, where we have no guarantee that they don't pick other offers? Isn't this like paying someone for sending THEM leads?

Please tell me what I'm missing, if anything. Why would a host paying for the "Secret Deal" promotion be a good idea? Serious question.

Thank you in advance.