These are photo's of my 2023 4dr Base with the factory Sasquatch pkg and modular bumper. I included the assembly line photo. You can see the gap between the fender flare and the bumper is tighter on my Bronco. I hope this helps.
I also have deflector bought from Ford, self installed with no whistling, no rattling from the upper windshield caps. As for bugs, yes the deflector differently works with a noticeable deference regardless of wind tunnels results. On the negative side is it holds water and dirt, which for me is...
I think the factory Sasquatch came with the Hoss 2.0 and not the 1.0 Your Ford Dealer should know that, unless it was not a factory Sasquatch. You might want to look for another Dealer for a second opinion.
The bumper went on the Bronco when it was new, a little over 2 years ago. It's a base Sasquatch, so no sensors. No issues since new with this set up. I still have it on and using it.
I did most of my wheeling back in the 70s into the early 80s through the pine lands. I also went to Stockton State College and had field trips to the "Stunted Forrest" which we were told that it is completely natural and science doesn't know why at that time. I did meet some locals, and we did...