I've seen the theme of "maintainer of popular open source product is threatened by person who doesn't understand it's just a component" show up a few times, but when I think about it most those times have been related to curl specifically. Maybe it's because of the domain haxx.se? Or maybe Daniel just writes about it a lot? Does this kind of thing happen so regularly to others?
Though the domain probably doesn’t help with the association. If you got hacked and the first clear string you find is “haxx.se” it’s not a big leap to interpret it as a taunt.