I am a member of a sportbike forum and the tolerance is much higher around language and topics. I enjoy it immensely and it has a very different flavour to it, but it is very localized and most of us know each other beyond cyberspace, so many persons' characters are known, changing the dynamic of communication.
DB is a little different obviously, but it is what it is and for me it's been a goldmine, plus an extremely important part of my life. I have met some of the best people ever, through this forum.
If we can keep it relatively 'as is' (of course it will evolve over time), then it will stay a great resource for all of us and future members.
My usual intervention when I observe things getting personal on the internet is to get people to imagine they are sitting in a coffee shop or a pub over a drink, hopefully conveying the understanding that most flame-wars would never happen in that situation.
The writer and the reader need to examine their reactions and slow down the energy before posting in cyberspace.
Even me

Peace my friends, not enough of it in the world at the moment.
Erik