I have no idea why they got rid of it, it's a huge shame and honestly super disappointing.
Only hope right now is to just google for unique / weird Airbnb stays in whatever area you want, and hope whatever blog / list / article's list's links are still spaces.
You can't really search by keyword either -- so that really sucks
Hell, even for experiences - you can no longer find animal centric ones (like going to farms to chill with goats / cows / etc, have a milking experience).
I really wish they would bring back everything they did have...