The D-K results don't actually say that incompetents think they're awesome. It says that, as a group, they tend to estimate themselves as slightly above average

The D-K results don't actually say that incompetents think they're awesome. It says that, as a group, they tend to estimate themselves as slightly above average. So do the most competent. What this means is that percentile-based self-assessment has no signal, not that unskilled people are preternaturally inclined to think of themselves as excellent.