Spectrum: Discourse/Slack Alternative

What do you think of using Spectrum?

To me, it looks shiny and polished but wish it was open-source as usual.

Unfortunately their code of conduct is too restrictive, disallowing discussion over anything contentious or axiomatic, thus ruling out philosophy discussions. This is a common issue with code of conducts, they prefer agreeable solidarity over disagreeable adaptability.

From my understanding, it is open-source. Spectrum · GitHub