With the book opening on Maxwell Lord having a tantrum about how the current member of the JLI are "second-stringers", I can see Captain Atom being less offended and a bit of a boot licker to authority but I really don't think J'onn as the leader even before Lord "took over" would take that as lightly as he did. Just felt a bit off. The rest of the issue has great banter and teamwork, introducing a new Rocket Red that is actually a Russian national. His dialogue is definitely of the time and very stereotypical but it's played off by the rest of the League in a fairly charming way. The big dumb robot fight at the end is just that, a means to the end and the reveal of a seemingly important character.