I'm going to ask the dumb question here - how is this at the top with zero discussion? If I need to get dunked for asking that's fine, but I don't understand, since HackerNews is suppose to be a place for high quality discussion on tech.

This plugin could potentially be a big deal. PureData has been around for decades but fell behind Max and/or MaxMSP mostly (IMO) due to usability limitations. If more people will be able to incorporate PureData organically into their workflow, it could create a real alternative to Max4Live in DAWs other than Live.

I could fantasize even further. A PureData plug-in could kickstart a VCVRack type effort - an open source library of interconnected audio processing modules.

VCV Rack is already open source. What would be the benefit of duplicating the 2000+ modules already present in Rack with PureData?

The advantage of this PureData plugin and Max4Live over VCVRack is that you can edit the patch on the fly right in the DAW (in addition to the fact that visual programming is way more accessible than a compiled language).

Just FYI: you can do that too with a VST fork of VCVRack called Cardinal: https://github.com/DISTRHO/Cardinal