> Just because Dunning–Kruger exists does NOT exclude the fact that people are good at judging some things.

I dont think this is about Dunning-Kruger, i think this is about the emotional attachment you build to something you created and how it clouds your judgement.

for example, if i recall correctly people liked their ikea furniture more, even tho its more work and of lesser quality, because they build it themselves and thus feel better about it. Same thing probably extends to most things you can do yourself: Cooking, Growing plants, building a dirt hut in Minecraft