Just a branch off thought I had when you said many people with PhDs have had Dunning-Kruger. In general, I think the way the term is used (especially online) is used incorrectly.
Everybody should experience Dunning-Kruger, it’s part of the process of learning something. People who use it as an insult should be calling their accusee arrogant instead.
Wish you the best man. Try to get outside and take a walk every now and again. Think about the things and people directly in your community. Ground yourself in your slowly progressing, small, and immediate environment.