"I'd like to see a non-profit public internet security service tbh" - that would be us, opendais :) We do open source digisec solutions for civil society and independent media. Check out the DDoS mitigation service https://deflect.ca.
https://github.com/equalitie looks like you are open sourcing some of it as well? Or all? :)
https://wiki.deflect.ca/wiki/Deflect_DIY
we have principles too :) https://equalit.ie/declaration-distributed-online-services/