I agree, that there are dogmatic tenants of safe spaces. Off the top of my head the ideas that racism/sexism and such exist and are problems.
Those examples are ambiguous, phrased like that. Do they mean that racism and sexism are bad? If so, enough agree that it can be called “settled”. Or do you mean something like ‘racism/sexism and such are rampant throughout Western society.’? If the latter, then suddenly many, possibly most, would disagree.
If you were to arrive at A+ trying to dispute those things you would not last long. However it is dogma in the sense that the debate is settled, not that there is no underlying reason or data for these things. Dogma in the sense that natural selection is real, not in the sense that god made the world because the bible says so. Dogma is not necessarily bad.
You name the least contentious parts of A+ dogma, but from what we’ve seen so far, there’s a lot more. It seems to consist of parts of some more extreme forms of feminist theory, a few cherry-picked (and frequently misapplied) theories from sociology and anthropology and a few concepts that seem to have been made up to make the world fit better into the framework, like “punching up” (I could be wrong; anyone been able to find the concept in sociology?). You claim that concepts like “Rape culture” and “Schroedinger’s rapist” are “settled”, in the way that some of the strongest scientific theories are? Sorry, but that’s complete nonsense. Natural selection has been confirmed by tens of thousands of experiments and observations, thousands of bright scientists eager to make their name, unable to shoot it down. Rape culture and Schroedinger’s Rapist? Those aren’t even theories; they’re “nicht eben Falsch”, as Pauli would’ve said. They’re ways of framing a debate rather than theories with explanatory and predictive value.
In short, most of A+ dogma is not science, not comparable to science and definitely not “settled” anywhere outside the A+ forum itself.
As for dogma not necessarily being bad, I disagree (even if that’s also a “settled” issue). None of my beliefs should be free from challenge, no scientific theory should be free from challenge, no matter how settled it is and how many times it’s been confirmed. When it comes to the A+ dogma, the situation is doubly bad because a) it’s unclear what exactly is covered by the dogma, and b) it definitely contains some highly unusual ideas about our society. If the A+ forum is not the place to explicate and defend such ideas from challenges, what is?