Does post-training quantization change welfare-relevant indicators in open-weight language models?

Epistemic status: Experimental framework created over a period of ~2-3 days during a hackathon at my home, and fairly heavily vibe coded. Expect some of this to be rough around the edges.I am currently in the process of designing a series of experiments to help learn something about the answer to the headline question. As of August 10th, the first procedure has not been launched, but I wanted to place some pre-registration details here before the actual results.This is something I have been thin...