> poor culture
First, "poor" is a value judgment and more a matter of opinion than fact.
Second, "culture" is a bit of a stretch. It seems more like a clash of personalities, one of which happens to head the Linux kernel project.
Finally, this smells much more like people thinking "gosh, everyone else on the Internet is pouty and offended, and I've had an unpleasant experience, therefore I too must have something worth bitching about publicly, because why should I be denied some of this sweet, sweet, whiner's attention?" and contributing to the ever-deepening cesspool of useless, pointless drama on the Internet.
Sarah had already moved on in her interests, and Matthew wanted to do something different, and so he went and did that. Honestly, I don't think they were "driven away".