I think he could have worked a bit better if he just broke down a lot.

Liberty Prime was completely destroyed the literal second it faced even basic combined arms tactics in the form of a glorified artillery strike.

But yes, the fact that Gamers can go "wow cool nationalism robot" is evidence that even satire as hamfisted as Liberty Prime is too subtle and open to interpretation, and that it needed to go further in establishing that Liberty Prime was a terrible boondoggle of a project and that all its lines are the ravings of fascist madmen.