Link of announcement please ? I went to wiki and AirlineRoute and found nothing
GUM-ICN is not surprising when KE is flying 744s while UA is doing 738s. GUM-CNS is really surprising considering UA (air mike) has a monopoly there.
But I fail to see how cutting these 2 rather bespoke routes can be linked all the way to ruining the "greatest route network" that OP is alleging.