I don't really understand the point of that. The Q&A experience still exists, you just have to ask the search engine first, then a human if the search engine do

I don't really understand the point of that. The Q&A experience still exists, you just have to ask the search engine first, then a human if the search engine doesn't help. The important things about a Q&A knowledge base is that the answers to real questions are persisted. This means that one answer can serve many askers.