@Sandy685
I've been on the single fee system for a few years now. I chose it willingly because it's easier to account for, and more consistent with how the entire industry works, so it's easier to maintain consistent pricing across platforms.
So far, no impact on bookings or the price the guest pays, I actually receive a slightly higher payout. It's as if nothing happened. Nobody noticed.
I also was listed on VRBO. In the end it's slightly more expensive, they have a few hidden charges, and they have a smaller market share than Airbnb, so bookings are fewer. In my case, I received 3 VRBO bookings in nearly 3 years. But I believe that's because Airbnb is so productive, that it books up quickly, and so other platforms just don't get a chance.
Nonetheless, I'd recommend signing up with other platforms, because its a good learning experience. But I wouldn't close your Airbnb listing. It takes years to develop a good review history and ratings. You shouldn't throw away your Airbnb history. It's quite valuable.
I hope that helps. Good luck and happy hosting.