And don’t forget that the listed towing capacity INCLUDES the vehicle’s weight itself, fully loaded.
It includes your payload (passengers/gear/coolers/etc) but not the vehicle itself.
That said, it’s pretty easy to add another 1,500lbs+ in gear and human flesh for a multi-day fishing trip. One of the biggest reasons never to “max out” your specific vehicle’s tow rating with just what’s being tugged around.
I’ll also add that there’s a ton of factors that manufacturers use to calculate the “max tow rating” in their commercials.
It’s a very specific wheel base, engine, drivetrain, gear ratio, transmission cooler, a 100lb driver with zero gear/passengers, no “goodies” that add weight like a moon roof, leather seats, etc.
If Google or a TV commercial says you can tow say 10,000 pounds with a half ton, I can guarantee you your truck is rated for less than advertised.