Silver is hard sounding and copper soft sounding is an old wives' tale and clearly misunderstood by many inexperienced posters here.
Cable sonics are far more a function of conductor purity, conductor geometry, and dielectric than the actual conductor itself or conductor combination/hybrids.
There are etchy/edgy copper cables and soft/mushy silver cables.
The fellow attempting to dissuade MBL users from silver is basically clueless and should be ignored.