Earlier quoted context omitted.
No, I agree with you. Especially since aside from the driver's safety, a lot of times, speed limits aren't about the safety of those in the car but to reduce the amount of noise due to tires, engines, breaking, etc... for those living nearby as well as pedestrians, cyclists, buses, animals, etc...
I'm not familiar with noise as a speed consideration by my State DOT. Do you have a reference to the noise consideration for speed limits in the law/rule for your locale?
Washington refers to modifying speed limits with the goal of noise abatement: https://wsdot.wa.gov/sites/default/files/2021-10/ENV-ANE-Noi... page 20
Delaware includes modifying speed limits (classed as traffic management) for noise abatement: https://deldot.gov/Programs/highway_noise/index.shtml
as a counterexample, https://wisconsindot.gov/dtsdManuals/traffic-ops/manuals-and... various pages: Wisconsin forbids using speed limit reductions as noise abatement.