Why does a firmware flasher need an internet connection?

edit

I mean I'm really not expecting software miracles from anyone that decided Electron was a good choice of anything, but it's fairly ridiculous that this already unusable configuration app cannot even pretend to function at all unless it can talk to api.github.com/repos/kiibohd/configurator/releases/latest and vash.input.club:3001/download.php. Worse still that the JS just crashes because no one thought that promise would ever fail to resolve.