I've posted on the topic above you linked above. I have no doubt there is a fine line here - balancing the desire to attract users and quality answers to SF, with avoiding low-value or overly narrow how to questions.

We encourage everyone to use serverfault to support each other (all SF members should be doing that). We don't direct customers to server fault (support for customers is by email). If customers can create a body of knowledge from well structured and well answered questions it fits the purpose of SF. This is boiling down to should reps from answer questions about product if they work for the mfg of the product.

I think SF already attracts a lot of the right people, the problem is they leave. Hostile comments, abrupt criticism, votes to close something someone doesn't like etc. Sure cash will keep some, but maybe we need to focus on who we are losing.