Funnily enough, Ancient Greek did have a leading h- sound. It’s since disappeared, along with tonal accents and some vowel sounds. I’m not sure the h itself is

Funnily enough, Ancient Greek did have a leading h- sound. It’s since disappeared, along with tonal accents and some vowel sounds. I’m not sure the h itself is really necessary for the main argument, but possibly it got dropped somewhere along the way? That’s pure speculation though, I haven’t seen any evidence for that in print.