They understood enough to know that they could not claim a license violation but invoking the DCMA, specifically the part about bypassing digital locks, they could intimidate a developer.

American lawmakers and politicians are technologically ignorant, and Americans in general see programmers as existing on a spectrum with boring nerds on one end and hackers on the other. Bambu was betting on easy support by painting the developer as a hacker who was "reverse engineering" their "safety features". What Bambu failed to understand is that the people who make and use Open software are not average Americans, they are tech savvy, interested, and loud.