Dear Yabia, let me prove your point.
Dear Avira, your post is exhibit A.
Dear Ujm, your post is exhibit B.
The OP observed that a large portion of the discussion here devolves into the same long held communal divisions. And these divisive viewpoints come with the territory, maybe they even are the home turf, of largely Ashkenazi ideologies. This is an observation of this site and it is a factual one. You observed that this is because of trauma. And you mentioned two possible circumstances.
Now, we all know that the holocaust and the enlistment had profound influences on the Ashkenazi communal structure. This can be regarded as a casualty of history in two ways.
1. Reactionary
2. Trauma
We can come up with more, but this will be enough to prove the OP’s point. How we can test which one? Just post it! If the responses come back as well, it was not the trauma it was natural communal progression away from the pitfalls of enlightenment, or it was the way different communities conceptualized the European experience, then there is no trauma involved just different types of communal thought. But if The purpose is to attack, then we can assume there is no real communal rational, rather it is the result of trauma.
In Exhibit A, we have exactly that. And, it lends a justification that anti Semites made a similar claim. Which implies that Judaism is attacked as contentious, so you cannot claim that being divisive is a result of trauma.
Exhibit B also is not an attack, but a counter attack. Again no reason is offered as to the cause of the schism. It also implies that being the seat of Torah is the real cause. Which is absurd. If they really were the seat of the Torah world, why did they not have the answers to their communal challenges? And why they divide and subdivide into all these denominations? Could it be that they were not interested in the truth? Yet none of this is explored. So even though EXHIBIT B hints at an alternate hypothesis, the unwillingness to investigate, again points to trauma.
Though this gives a new source for the trauma. It was the trauma of being unable to get answers to basic communal problems from their own Torah. Hey look dear Ujm, I agree to the basics your hashkafah!
Now it should be pointed out that we only have responses from one side of the common spats. But it can be pointed out that if only one group was traumatized they would be mostly left alone.from that there debates are continuous, it seems like there is trauma all around.