@Stephanie
"Split Stays are only shown if a guest picks a listing but it doesn't have that full duration availability, in which case, the screen shows other listings the guest could consider moving to so they can have the full desired duration just in more than one listing."
This is not true. Split stay options are being shown to me in the very first page of initial search results, when I haven't picked a listing and there are thousands of non-split vacancies available that completely fit all the parameters I set. No matter how broadly I target my search, the first results I'm shown all seem to be well outside of what I was looking for. This doesn't make me think "ooh what a great idea for a trip that I hadn't thought of," but rather "yikes, I guess Airbnb fired all its programmers now too."
The example you show in that screenshot really isn't any better, though at least it's the same country. There are many reasons I might want to book a place in a big diverse city like Manchester for 7 nights - maybe I'm there for work, visiting friends, checking out the vibrant nightlife and thriving LGBT and arts scenes, or visiting the places Morrissey used to hang before he became a fascist. Whatever it is that takes me there, I can assure you that splitting up the trip and spending half the week in little old 96% white Lincoln does not achieve the objective. It's a small town 2 1/2 hours drive away, lots of history but none of the things you'd want from a week in a bigger city. Even if you were open to splitting the stay for a different experience, you still have Leeds and Liverpool much closer by, and 514 listings in Manchester that are available for the whole week.
In short, the janky algorithm is proposing plans that no human in their right mind would ever suggest. It looks to me like an experiment in behavior modification, rather than a tool for delivering useful results. The thing is, people don't trust your product when they can plainly see how the AI is designed to manipulate them.