@M199
I am sure they do but I would be terrified of using even a flexible cancellation policy for my listings. I started off with moderate, because it seemed fair enough (from both the guest and host sides), but quickly learnt that some guests would wait until the deadline for full refund to cancel, with no valid explanation, leaving me in the lurch. This happened most frequently in high seasons, meaning I lost out on other the other bookings I would have undoubtedly have gotten with more notice.
Someone suggested to me at the time that some of these cancellations may have been 'visa hunters', i.e. those that needed to show they had an official place to stay. No idea if that was true or not, but I got fed up of it. I didn't mind if guests cancelled in advance due to valid reasons, but cancelling a couple of hours or only minutes before the deadline for full refund became far too common.
I switched to Strict and haven't looked back. My bookings certainly didn't go down and cancellations were very rare pre-COVID. They are now starting to go back to being infrequent. I would prefer firm bookings. There are too many flaky guests out there as I can see from the enquiries I frequently get.