I suppose there might be some similarity. It's more of an 'I had a similar idea before, I even posted it on meta once, but in retrospect it probably was not as great as I first thought'. To a degree I am siding with the 'democratic' stack structure.
Stack seems to be built around 'who is an expert' being answered by asking 'who gets the most upvotes for Q&A found helpful by the audience of the stack'. Which is certainly imperfect, but seems to avoid some of the other ways in which expertise-assignment can get monopolised by special interest groups that do not care as much about actual expe…