Instead of using guesses about what the part can do, we should always look to the datasheet to see what the parts can really do. ....
Guesses, yeah right!
I've looked at the datasheets MANY times. And I know hot from hot from hot. That's
where the 0.5W comes from.
I seriously doubt that many Arduino people want to run at the ragged limits, or burn their
hands either. Water boils at 100C, somewhat short of 175C, or even 150C.