Good thing, though, that their Fi is more developed than an ENFPs, so they can be extremely ethical...or extremely not. :/
On the other hand, an INFP lacking Te will never steamroll you like an ENFP hyped up on a half-crazed Fi mission with a hefty Te push.
Yes, Te is wonderful - when balanced with Fi.
Yet even Fi-doms without good Te development still serve a purpose, and it's important to acknowledge that they do...they *can* bring peace, tolerance, beauty, and creativity to the world...those things are important.
And even when their Fi is bad, the cool thing about IxFPs is that they usually won't bother anybody if they lack Te, and won't want to be in any positions of power, so you can relax on that front.
Any type can go wrong. Every type has it's gifts.