The allegation of childishness has to be seen in the context of a pretty childish workplace. If you look at this through the lens of agency culture, what Don did to Ginzo is not at all unusual. In an industry motivated almost completely by ego, Ginsburg really fucked up in how he treated Don. Peggy's reaction across…

man, y'all must HATE Sin City then.

Megan talked him out of anything like that, and Sally closed the deal on a perfect Guerrilla strategy. All three got their revenge, though only Sally knows it.

what, no mention of the ozymandias reference?