This might have been an inside joke, since the attack is very specific: The main dev, Hypfer, was called an asshat in a very similar tone by an anonymous GitHub

This might have been an inside joke, since the attack is very specific: The main dev, Hypfer, was called an asshat in a very similar tone by an anonymous GitHub user once; this sometimes surfaces as a kind of joke in the official Valetudo communication channels. Obviously this context isn't common internet knowledge ;-)