It is a firsthand account of someone in the community. They referenced no sources and gave a description of events based entirely on memory. They claimed their own involvement and interest in the outcomes.

Right, but I don't see a better way.

Do you think an outsider (ie. an impartial person) be able to provide a better summary?

Even as outsider has to get his info somehow, usually by interviewing those involved and then filtering stuff.

If the person is involved in a situation and recounts a history from their perspective it is not reporting. It doesn't matter whether you think they did a good job or not. A combatant in a war writing their evaluation of it afterwards is not 'reporting' and neither is what he did.

So now we're comparing the NixOS community to a warzone? Is it really that bad?

An analogy is not a literal comparison between two things. It is a way to describe something by pointing out relationships between things and comparing the relationships. It does not literally compare NixOS with a warzone.