Someone on the ICE F150 forum put the non-adjustable headrest into a vice (by its posts) and said they were able to bend it into a more comfortable default position.
Before trying to bend the standard headrest, I did a bit more testing, and found that the tilting headrest is more upright. The standard headrest is tilted forward equivalent to about 2 to 2.5 clicks of the 4 clicks of the adjustable one.
After bending the standard headrest quite a bit, it is still not as upright as the adjustable one, and I fear that bending it further will weaken it such that, if rearended, the posts will fail at the bends when your head impacts the headrest, possibly impailing your neck/skull base on the remaining post...
Been lurking on this thread... While installing seat covers on the Lightning today it occurred to me that the Lightning front headrests are similar to the tilting headrests on the 2021 Bronco... Confirmed!!! 2021 Bronco FE 2 door tilting headrests fit a 2023 Lightning XLT, no mods, drops right in. The detent notches on the posts are a little different but it all works fine.