PUGs need a way to communicate and broadcast, to be discovered, but it doesn't necessarily need all of Meetup's features. Also, PUGs probably don't want to be tied to Facebook or other social media platforms. It'd be best if they allowed a simple ownership transfer, once you get tired of organizing.
That's why I created https://pythonuser.group/ - a lightweight side project that, despite being rough around the edges, fulfills the core need: allowing people to discover PUGs worldwide for free. The platform costs me almost nothing to maintain. Allows to subscribe to local PUGs via RSS (not sure if it works). I'll add "export all my PUG data" once someone requests this feature.
It's the first time I share it with the world. Please don't treat it as prod-ready. Feedback welcome at hn@{username}.com