You are comparing a non publicly available trust chain (Microsoft's) with a public and transparent one (Mozilla's/Linux Foundation's) [1] I don't see any repro

You are comparing a non publicly available trust chain (Microsoft's) with a public and transparent one (Mozilla's/Linux Foundation's) [1] I don't see any reproducible builds for Microsoft Edge. Therefore, your statement is an assumption and nothing more. We can not trust Microsoft more because they are more proprietary. [1] https://www.ccadb.org/ https://www.ccadb.org/