Quel'thalas barely lifted a finger as well during the whole Scourge invasion and decided to turtle up inside their defenses while all of Lordaeron got sacked by the Scourge. Gilneas may not have done anything to assist their former allies against the Scourge, but to say that it is Genn's fault for the current state of Lordaeron and the Forsaken is frankly stretching it.