I think I'm too stupid to understand what you or those authors are trying to say

I think parent-poster is saying that politicians and technocrats have a gulf between how their view the world and how well they communicate with one-another. However after that point (ironically?) it isn't clear what what their purpose is for including the quotes.

I think the most-charitable interpretation for the "baths" quote [0] might be: "For the people I'm trying to communicate with, lightly touching on deep subjects is actually fine." (Both most-charitable to Nietzche, and also to the poster quoting him.)

[0] https://www.gutenberg.org/cache/epub/52881/pg52881.txt , section 381