I sympathize about concerns for discussion forums which become monopolized by something which is profoundly uninteresting or even offensive. Going offline until it dies down or moving to another venue are viable solutions, and I have utilized both. However, in some cases that is a double edged sword.
I used to be a member of an international social/hobby organization which dwarfs AMSAT and even the ARRL in membership and finances. Paraphrasing and compressing the situation somewhat, we had an initially very small but focused group of "reformers" who wished to make changes to the organization to modernize it, and to push "the old guard" out. There were many soothing words, and the "reformers" became very adept at using the organizations own rules in creative ways to further their cause. Many of the local chapters explicitly or implicitly discouraged any discussions of the issues since that always resulted in "conflict." It came to pass that the reformers achieved their goals, and set about instituting their enlightened policies. Despite all the honeyed words, nothing which was promised about new members and projects came to pass. The organization currently still exists, but with cratering membership and finances.
So how does that apply here? I encounter people I used to know there who are wondering what happened, and how? "Why didn't somebody warn us?!" Some had been the most adamant in keeping anything which would cause "conflict" out. For me, a classic case of not being sure whether to laugh or cry. Of course what can take a generation in a large organization can happen in the blink of an eye in a small one. If you don't pay attention now, you may well be wondering what happened sooner rather than later. A true cautionary tale that sometimes what you do not wish to deal with is what you should give the most attention. Choose wisely.
73,
Alan WA4SCA