I have to agree its frustrating when you get a bunch of "it wont work" and "it isnt any better" when jeep has been using it for a longggggg time. So it must work at least well enough that its worth a shot. especially considering the coin you save. You'll be out some time and a little money.
The stock Jeep/Ford style steering is far from good, those guys upgrade to steering off of the top of the knuckle too. GM and Dodge used the push/pull steering for decades (Ford did too for a while), it works just fine on a stock truck or on a truck that doesn't get wheeled hard or one that doesn't have lots of lift.
When you run a draglink from the pitman arm to the tie rod, the draglink has to be short to clear the passenger side spring (Jeeps either used the leaf springs under the axle or links/coils and Ford used a super wide spring pad spacing or link/coils to avoid this). Shorter draglink = still more affected by suspensions travel.
If the draglink isn't short, it has to be bent at extreme angles. This is where the scary steering stuff that everyone talks about comes in, put any serious pressure on it (i.e. really use it in a trail situation) and that draglink will collapse.
Last, and definitely not least important, is that running a draglink from the pitman arm to the tie rod means a much more steep angle on the draglink. That equals bump steer and poor street manners. The stock Ford/Jeep linkage is fairly flat on a stock truck, lift them and they have the same downfalls that a Chevy push/pull steering system does.
There is more to it than length of draglink, angle etc because it also depends on what arc the suspension travels in, but that's the gist of it.