You misunderstand, the boots have that. They are just leather exterior. They provide the necessary protection. Check them out before judging.
As mentioned, the Forma Adventures do not have same level of protection. Even the Terra Evos aren't all that much better than my Corozals.
I've tried on the Forma Adventure, Forma Terra Evo X, Corozal, Belize, Toucan, and Tech 3, 7, and 10, all in one sitting. I played with them all for a bit to see just how much flex they'll allow.
The Forma Adventure is, IMO, a budget Corozal. It's not quite as comfy, but some of that may depend on your foot shape. The toe box is wider, so more accommodating to wider feet. I'm also not thrilled with their insole, which is very thin. It is, however, pretty affordable on the scale of boots.
The Corozal/Belize are the most comfortable boots I've ever tried on. They are far more comfortable than my work boots. The Belize would be great for commuting, and the Corozol work fantastic as light adv boots, similar to the Forma Adventure. I make the Corozals work for both, because that's what I have.
They have moderate impact and good abrasion protection. However, the only ankle protection is inner and outer malleolus impact protection plates. There is no ankle structure to speak of. They'll keep you from rolling an ankle while hiking, but they're not going to keep you from destroying an ankle in a crash. A good dab at the wrong angle while riding, or the crush force from dropping your bike on your foot, and your ankle is going to shatter.
The Terra Evo X is what I'd (personally) consider as adequate for mild off road duty. Decent compromise between flexibility and protection when you know you're going to be walking a bit and need the flexibility. That side hinge plate assembly helps provide some structure, but it's not on the same level as a proper MX boot. It will fold over with enough force (think about jamming your boot at an off angle while dabbing to keep the bike upright).
The A* MX lineup is progressively more protective as you go up in number (and price).
The Tech 3 is probably fine for most adv riding. Light, moderately flexible, good protection. Slightly better protection than the Evo X.
The Tech 7 is good for more aggressive riding, including MX racers. No hinges, but they flex a bit with break-in. They're better than the Tech 3 in pretty much every way, but obviously more expensive
The Tech 10 is bulletproof. You're not twisting an ankle, or shattering it, or crushing it. The major downside is that they're very bulky and heavy. Definitely not hiking boots. I can walk in them, but I'm not hiking a mile in rough terrain without thrashing my knees.
The Toucans are, IMO, the goldilocks adv boot. They're more protective than any other adv boot and even some light MX boots, but they're still light and flexible enough for hiking. They're also gore-tex lined. But holy crap, the price. One day I'll pick some up, but not today.
As I mentioned, PPE is a personal choice. If objective safety was the only concern, we'd all be huddled in our rooms instead of out riding two-wheeled death-mobiles.
If I know I'm going to be walking a bit, I'm more apt to take my Corozals when I should probably consider something more. Someone else may be fine in hiking boots. Basically, you do you. But at least understand your choice before you make it.