Looks like it's been corrected, but there are people who try to exclude the Hiroshima and Nagasaki bombings due to the significant difference between those weapons (usually calling them "atomic bombs") and the later classes of boosted-fission and finally fission-fusion thermonuclear devices ("hydrogen bombs") which formed the bulk of the Cold War nuclear arsenal on both sides.

Not saying it's correct to try to sweep the WWII bombings under the rug that way, but it is a thing I've seen people try to do.