It is usually covered and protected by a oil pan skid anyway, at least it was on my Tacoma, and I will be getting good skids for the Jeep too when they are available.I’m not worried about it opening, more it acting like a scythe and collecting grass right under/around the engine. Just another thing to catch on. Underbody protection sometimes is equally as bad at collecting grass and pressing it against hot engine/exhaust parts.
Most people will never have that as an issue, but when I drive up the ski hill in the fall it’s a concern that makes me always check underneath the vehicle now to ensure it’s clear before walking away to work on gear.
Not a design flaw or anything, just a consideration for my use-case.