Technically they are implemented as mods, and mods disable achievements. If you are playing on PC, check the Nexus Mods site for achievement related mods.
A distinction between QoL and balance changing mods would be an added layer of complexity, which would need to be added retroactively to the achievement system. I have no idea if that would be a trivial filter or if the design was assumed in so many place that changing it would be error prone and likely to cause bugs. It would, however, open up the same question for workshop mods, which would require some kind of curation or verification process to make the distinction there.
