I hate when they toss in some rando who acts like no one in his position would act just to create some drama. Spend some time setting up why he would let his emotions override all reason. If the setup isn't worth the time than neither is the payoff lacking any setup.
I mean, he's just saying what everyone else is thinking. No one is watching Hiro's antics and thinking "Yes, that was a sound strategy indicative of a brilliant tactical mind". They're all thinking "Like hell he did! What in the everloving shit did I just watch!"
Mercenary is a career that tends to attract hotheads and idiots, the kind of people who let their mouth get ahead of their brain. It is also a career that tends to weed hotheaded idiots out rapidly if they don't figure it out. I think he's an idiot, but a credible oned
To pile on to poor Rando Calrissian's faux paus, though... accusing Hiro of acquiring his honors through deceit and falsehood can be interpreted as casting aspersions upon Serena, as it was upon her word that he was honored.
Dude could have made this worse, but it would require some effort. He had the sense to wait until the awards ceremony was over, and took his beef up with Hiro instead of Serena.
...
And he swung at Hiro, not his crew. That would be an AMAZINGLY bad idea, as it turns out. (I've read ahead in the novels.)