Unfortunately, I'm still not sure what you mean by "poisonous". To me it sounds like "community is poisonous because discussions are held wrong, and the discussions are wrong because community is poisonous". Maybe it's just me but I have hard time understanding what exactly is the problem here except for the fact that you obviously dislike something about PHP community. But if somebody asked me what exactly you dislike and what you'd have fixed if you could - I couldn't really give any meaningful answer.
To be honest, I think you are trying really hard to pretend my points aren't made rather than trying to use my points to investigate the phenomenon. I'll admit I'm not explaining them terribly well - its been 4 years since I've taken active part - but there's enough information in there that you could use it as a starting point if you were truly interested, which I think you aren't.
Sorry, your assumption about my motives is wrong. I would be really interested in finding out what exactly people on internals did so you call PHP dev community "poisonous" on every available opportunity (this is not the first time I read this from you, though it is the first time I had a chance to try and find out why). Unfortunately, I was unable to understand what offended you so much. If you didn't guess it yet, I was present on the internals list at that time (and long before and after that) so I had the opportunity to personally observe all those tiresome and long discussions and many more. So I thought I have pretty good starting point and enough information to at least try to understand your complaints. However, I still failed to figure out why you think PHP dev community is "poisonous". I guess it's not to be, well, at least I tried.
I didn't assume anything about your motives, but I didn't mean to be harsh. You do come across as an "apologist" for the community though. There are of course many communities that behave similiarly, but that doesn't make them healthy.
Look at it this way - imagine you had a conversation with a group of people 4 years ago, and they acted like dicks. Now, four years later someone challenges you to explain how they were dicks. It's really hard to give an answer better than "i dont know, they were just dicks alright" :(