Here's an idea for you to do in your spare time.
Take your bike, and go for a nice spirited ride. Bring it back to your house nice and hot, and let it idle in your driveway, and just watch the temp gauge rise.
Now pay attention to the bike. Listen for the fan to kick on, and jot down what temp that happens at. Listen for the fan to turn off, and jot down what temp that happened at. Let it just idle there for 10-20 minutes.
Did it ever get anywhere close to the 120C temp that the book says it overheats at? Probably not.
These engines are designed to run quite hot, that's how they make the amount of power they do, but as long as the fan works, and the thermostat works, and there's coolant in it, it should never over heat, no matter how long you're stuck in traffic.
And if you ever wanted to, there's enough room on the radiator to add a second fan to bring the temps down even quicker.
BC.
I didn't do it, I swear.
And even if I did, what makes you think I would admit it to you?