The Bronco is not built like vehicles you normally see strut tower braces on. Unibody vehicles benefit from a strut tower brace because it helps to triangulate the forces that otherwise are part of the body with little support.
The Bronco is the frame on body design and the spring pockets are a steel structure attached to the frame. When you look at vehicles like the Ford Raptor, which is also a body on frame design, you don't see them using strut tower braces.
in addition, the bronco doesn't use a Macpherson strut front suspension. Instead, it is a coil-over-shock design with upper and lower arms with a knuckle.
added below. Bronco Sport uses a suspension that would benefit from a strut tower.
2D Base Mansquatch: Ord 11-24-2021; VIN 3-16-2022; Schd 5/9/22; Sticker 5/4/22; Modules 5/10/22;Built 5/11/22;Shipt 5/12/22;Delv 5/24/22