Why is it called ham radio?

Why is it called ham radio?
“Ham radio” is a nickname for amateur radio. There are many theories about how our hobby came to be known as ham radio, but the one I like comes from the days when all radio communications was in Morse Code and many men (and women, too) made their livings as professional telegraphers. These telegraphers were proud of how well they could send Morse Code. They chided the amateur radio telegraphers as being “ham-fisted operators,” meaning that their sending was awkward and inefficient. Along the way, this got shortened to “ham operators” and the hobby became known as “ham radio.”
Whether or not this story is true, the ham in ham radio is definitely not an acronym, and should never be spelled HAM. Nor should the hobby be referred to as simply “ham” without the word radio. I prefer to call it “amateur radio” myself, and even that term doesn’t describe all that we do.

Etymology of ham radio

https://en.m.wikipedia.org/wiki/Etymology_of_ham_radio