Is all up weight of 9500 lbs. too much for Tundra 5.7L?

I for one think it's cool that, in a sense, Ford offers 2 three-quarter-ton options to the market.

Imagine you needed a 3/4 ton, liked Ford, but for whatever reason hated the styling or something about the Super Duties.

Voila, enter the F150HD with Max Tow & HD payload pkgs.

It wouldn't be necessary per se for GM or Ram to follow suit, as the body style, ergonomics, etc. remain consistent between 1500 and 2500/3500 series trucks.