I don't see acafen saying "I feel hurt and intimidated by the squeefen/cosplay/gamer/whatever discussions."
But you have to ask whether the acafen are actually doing anyone any harm within fandom.
I am trying not to take this as, "it doesn't matter if people got hurt as long as we didn't *intend* them to get hurt, and *reasonable* people wouldn't be hurt by what we were doing."
The situation: there are acafan discussions. They are glorious, thoughtful, inspiring, and fun. And some people feel hurt by them. They feel insulted, excluded, confused, sometimes even threatened. And the acafan-and-supporters response to this detail has universally been, "So? Not my problem."
However, when this attitude is aimed at a topic-of-import to acafans, there's plenty of shock and outrage.
I've reached the end of my tolerance with "my pain/worry is related to an Important Issue, and you should care about it, or you're stupid/ selfish/ ____ist/ some other kind of vile person; your pain/worry, however, is just holdover trauma from a bad childhood experience and is irrelevant to Sensible People."
Even when that's accurate on an individual level (and trust me, I have seen some of the anti-aca rants that don't make it to metafandom, and they can indeed be pure entitlement-ladled education-hating babble), sending that as an overall message to all disagreements... makes for an interesting community.
Not a friendly one, not a welcoming-of-differences one. Just interesting.
And, of course, the community is poorer for this kind of exclusionary attitude; it means people who have much to offer sometimes don't bother, if the first message they get is "those who don't fit in aren't welcome; only those who agree with [majority opinion X] belong here."
Unless, of course, the majority of the online (LJ/IJ'ing) fandom community *wants* to exclude those people. Which is possible; I haven't sorted out how deliberate this pattern is.