It means they modded it wrong. Australians are very regulated with tire size. They tend to make up for that with more suspension lift. Often, these suspensions can over-extend the front CVs, making them run at angles that severely limit their torque capacity. With overzealous pedal, trailer, and bad mods - that's all on the owner.
The LC250 above is on stock suspension save some really mild 32.6" tires so overextension and mods are not at play. Not carrying any extra load. Or unreasonable throttle really.
If you want to understand how bad the LC250 series is mechanically, take a look at this
Outside of that, All GX-series have my respect. They may not be 200-series or full fat land cruiser worth of beef, but they are the full duty Prado's that will do the dirty.
The LC250 is a barely tarted up 4R (not even worthy of Prado), selling on name for a price more than it delivers in substance.