My 2021 has 110,000 miles on it. I got one from an outside company up to 225,000 miles or 7 additional years. It covers all the major systems and 90% of the ancillary stuff. Well worth it.
Install a 1.5" lift/ level kit. It will give you the needed clearance and get rid of the stupid looking front end rake. Simple to install. They go on top of the existing struts.
I've been using this one for years. Simple and effective. Search on Amazon.
Fuel Locking Gas Cap Compatible with 2021 2022 2023 2024 2025 New Ford Bronco 2/4 Door F150 Interior Accessories Lock Fuel Tank Filler Plug with 2 Keys, 1 Set Black
The steel reinforcement plates transfer weight from the tailgate to the hinges. That' the idea. The hinges are strong and can handle the weight while the tailgate can flex when the truck is bouncing.
I also don't run M/Ts but that sound is identical to what I hear driving by trucks that do. I ask myself every time how can they drive with that constant noise. It seems as the M/T tires wear and get flatter the noise gets worse. I would have thought it would have been the opposite.