Using modular licenses might mitigate the problem of managing a frankendocument, but I have to agree: making ethos licensing viable would require a ton of effort. The SPDX (Software Package Data Exchange) standard includes boolean expressions to combine licenses[0], like `MIT AND ISC`. It would be difficult but conceivable for a lawyer to write human-readable and enforceable licenses each forbidding one specific use. Bundling licenses with `AND` into cohesive super-licenses covering ethical standards would take more effort. Figuring out what ethical standards a large-enough ecosystem of engineers agrees upon is another herculean task.
Still, I think the efforts are worth it: I'd like to opt out of some subsidizing fields of endeavor but not others. IANAL, just a programmer, but I'd be interested in contributing to ethos-licensing-related projects.
[0]: https://spdx.github.io/spdx-spec/appendix-IV-SPDX-license-ex...