In starting this out I have no idea on how long this is gonna be because I'm writing this as I think, not quite stream-of-consciousness but not far removed from it either so I'm warning y'all up front.
Ok...
The idea that ABW should be a "safe space" for ANYONE is ridiculous. If you're over 30 and STILL need a "safe space", you need to go see a therapist because clearly something went wrong in your life and you're not equipped for the real world. The real world, which includes the internet, is a hostile environment. However, human beings have these incredible abilities that we, collectively in Western society, seem hellbent on eliminating from the human experience: Resiliency and adaptability. You gain this by repeated exposure to hostile environments. Humans have adapted to every environment on this planet over time. In hot climates we have become darker to protect our skin, in high elevations where the air is thin we have larger lungs. Our brains adapt to this as well: a child that gets burned playing with fire knows not to do it again OR develops a way to play with it without getting burned. In this sense, "safe spaces" removes out innate ability to cope with anything outside of our own liking. Surrounding yourself with people that continuously feed into whatever it is you feel you need a safe space for breeds extremism and toxicity on a level we haven't seen in "normal" day-to-day society ever. The only place we've ever seen anything like this is with extremist groups like the KKK, ISIS, Nazi's, the IRA, etc, where they created "safe spaces" for their ideologies to fester.
Safe spaces breeds intolerance to outside ideas because they're nothing more than a big circle jerk where everyone involved simply reaffirms that what you believe is correct and everyone that doesn't believe it is an intolerant asshole. The irony in this is that because of your participation in the rhetoric thrown about in your "safe space", you've become the intolerant asshole you despise so much. If anyone reading this doubts any part of what I've just said, have a look at LSA, BHM, Stormfront, any MRA's message board, etc. and get back to me.
I counter the thought of being anti-"safe space" with the need for moderation. ABW does not need to be anything like 4Ch*n, 9G*g, etc where the ONLY bannable offense is posting CP or posting bare titties and ass in the wrong section, making anything else ok. We don't need to be the wild west like those place because of the problems it brings along with it and anyone that has ever casually glanced at /pol/ knows the shit we say to one another here is akin to two kinder-gardeners arguing over who gets the swing next. To avoid such issues moderation is needed and to that end I believe the mods here are doing their jobs rather well. At the same time, however, we need to have our ideologies challenged, it's the only way to expose ourselves to viewpoints outside of our own and to grow as individuals. So when these threads appear that talk about shit that you have a visceral reaction to and you voluntarily go in there at the very least read the responses and furthermore COMPREHEND what is being said. Don't skim it and make assumptions based on a handful of posts you've barely read because you'll miss out on critical information that would bring a better understanding to what the people in there are actually saying. If, in response to this last statement I wrote, you come back with "Well, I don't need to read the responses to know there's fuckery going on and I don't' like it" then you're precisely part of the problem not just with ABW, but with society at large because you're the person intolerant of others opinions and viewpoints.
We're all grown here. Many of us have careers, families, the whole nine yards. The recent poll on our ages reveal that, IIRC, the majority of us are over 30. So we're all good and into our adult years. If we as adults cannot handle people having viewpoints other than our own then we as adults have failed ourselves and, truthfully, need to log off completely until such a time comes that we're comfortable with anything outside of the fantasy we'd like reality to be.