Technically, I don’t think it is. Dunning-Krueger is where people who know a bit about a subject don’t know how much they don’t know, so they feel like they’re accomplished because they know so much (certainly more than they used to), as opposed to those who know a lot, and thus know how little they knew whey they felt like they knew everything and how much there is they don’t understand, and tend to underestimate their own skill.
That’s an entirely different thing from the people who go in knowing nothing and assume they may as well already be experts because “how hard could it be?”. (See also: emeritus professors of physics and geology with Opinions about Climate Change.)
They aren’t mis-estimating their position on the skill curve: they’re not on the skill curve at all, just saying “Hey, hold my beer, I got this!”.
