i denied this for a good while, but i now do believe that a better ethernet switch does matter over a bottom of barrel, cheapo, poorly designed one in preserving/enhancing sound quality of a digital feed
that said, whether one as expensive as the op is highlighting is necessary to reap the gains a better switch brings is another question altogether... just like saying better cables matter to a good sounding system, but you likely don't need to spend thousands to get better performance