Fair! Though, terrible is a strong word, but I do agree that they are limited in some contexts off-road, but IFS is not one of those limitations. I’ve got only a little experience with them (a friend has one exclusively as a bush/hunting rig in Canadian shield-type bush - Dense trees, muskeg, etc.) but I am under the impression that the main limitation for the Humvee is the size of the rig. Your point is well taken that they do better in some terrains than others - the point I was making is that IFS, if designed properly, is good for most off-road applications and usually far better on road. The off-road capability gap is incredibly small for the vast majority of people and trails.
Plenty of other examples of IFS doing pretty good off road too - Graham Cahill of 4WDAction (Now 4WD 24/7) takes his Isuzu DMax - which for a long time was pretty stock — with IFS on the exact same trails and trips as the rest of his crew, many of whom use solid axles. Graham might have to winch a bit more often, but that’s part of the fun and he’s never missed drinking an Iron Jack around the campfire with his friends at the end of the day, so his IFS seems to keep up just fine And I bet is much nicer than some of the others on the slab bits between tracks.
SFA is nice though — to be clear, I’m not saying it’s not better off road, I’m just saying (as I think you are) that the gap between IFS and SFA off-road is much more narrow than most make it out to be, to the point where it doesn’t realistically make a difference for 90%+ of users. My Jeep (SFA obviously) could go anywhere I pointed it, but so can my IFS truck - just a little more carefully in the sticky bits, and a LOT more comfortably everywhere else! So, I’m convinced that IFS is not the dealbreaker many feel it can be and I think it will make this Bronco a very livable Daily Driver, with a minimal decrease in off-road performance for most users.