Yep. I tried to write my dissertation in an accessible way, and my thesis committee's only feedback was on the style. They didn't even bother to read the content.
Then I dropped out and posted the dissertation on the web, instead. I didn't want to ruin it by making it "academic"
enough.
It sounds (like a few other comments in this thread) like you didn't want to write a dissertation - you wanted to write a document more broadly communicating your thesis topic to a wider audience.
There's nothing intrinsically wrong with that, but if you think you would ruin it by turning it into a document written for (and to suit the needs of) the thesis committee, then it's not a dissertation.
similar experience here. I wrote a Masters dissertation and the feedback was effectively “why are you introducing and explaining any of these basic concepts, the audience is expert researchers who know this stuff already.” I wanted to be able to give it to a curious friend who isn’t an expert but has enough background that with some help they could understand what the dissertation project was doing.
Then I dropped out and posted the dissertation on the web, instead. I didn't want to ruin it by making it "academic" enough.