Do you know what a Jeep Rubicon is? It doesn't sound like you may be familiar. No profile info....so maybe you don't get those in your market? It was specifically designed to be able to do the "Rubicon" trail as well as tested in Moab and designed specifically for more difficult trails. Most every 4wd manufacturer tests in both these areas....so to claim they aren't designed for this use is not really accurate.
Never heard of Magnuson-Moss Warranty Act, either? Read up....in the US, the mfg. cannot deny a warranty claim because of "aftermarket parts" unless those parts can conclusively be shown to have caused the failure of the stock components.
Breaking a part wheeling has
NEVER been covered. Take your stock 4Runner and bust the IFS CV offroad and Toyota will not cover it. So....
why would Jeep?
Who has said rockcrawling isn't or can't be recreational? Yes, it can be "professional".....but very few competitions have anything even remotely close to a "stock" class that would resemble the types of vehicles we're comparing.
I think you're referencing this comment:
I referenced "recreational" b/c in the US....overlanding is not anything (even recreationally) like what you see in Africa or South America. The "reacreational" use that most actual owners here in the States see pales in comparison to other parts of the world where the ONLY road through an area may be an unpaved one with little other alternative. 1st world problems, right?

The point: even with a fancy snorkel (sans real electrical waterproofing in most cases), you won't see most American owners ford a creek/river to the depth that the interior is going to fill with water, let alone break trail in a jungle environment where they're going to destroy the factory paint job.
Overlanding is mostly driving around on dirt roads to get from point A to point B. In the US...most of the time, it's to enjoy the beautiful scenery. Nothing wrong with any of that....but it's not really a test of a 4x4's drivetrain reliability or strength either as a Subaru Outback can do most every "overlanding" trip I've ever seen featured in the US. As you alluded to....you don't really need mods for that.
So was the point of the thread just that the people on this board don't need to mod their vehicles for overlanding? Not everyone here does overlanding....just sayin'.
Let me ask: Why is it any of your business how someone else chooses to use their property provided it doesn't infringe upon anyone elses natural, negative rights?