I tow a 7500lb Travel Trailer with my 22 F150 Lariat with 1800lb payload and 940lb tongue weight just fine. Like others have said why are you needing such a high payload?
I love my 2022 F150 Lariat 3.5, 3.55 rear end. Max Tow. Payload 1799lbs which I feel for the 501a Lariat package is amazing. No sunroof. But all the creature comforts you could ask for. We tow our 2470BH around 7300lbs loaded through the rookies between Calgary and Kelowna with zero issues.