Then all tractors would have been articulated as it should have been for front loader work.
When I work in Germany, I have the pleasure of occasionally operating a small articulated loader about the size of my JD 1025R. It had four equal sized wheels, and is obviously designed as a loader first. It has really well thoughout controls, all work is done one hand on the wheel, the other on the loader control, with forward and reverse there, and a gas pedal. Totally simple. That said, it is articulated, but does not have a teetering axle, so it's not designed for uneven ground. it sits high, and although stable, feels that when articulated steered tightly, feels less stable. I'm sure it's fine - it's German, but I actually do feel more stable on a regular tractor configuration chassis when the loader is high, even with the teetering front axle.
The fixed chassis, rear wheel steering versions are horribly twitchy steering at any speed. Fine crawling around the yard, but not at road speeds! Like a shopping cart going backward down the aisle - wants to go any direction other than you point it!
I agree it seems odd to have the small front wheels carrying the load, but that's where the load limit comes in, I suppose. On the other hand, I've also run CAT 988 & 992 loaders, they feel as though they can carry a heaping bucket load with ultimate stability - but I can't afford one, it would not fit down the paths in my forest, and if I ever got it stuck, that would be... well... a problem out of my league!