I don't like the movie 300, nor do I really like the show Spartacus, So I guess the "jock spartan" tropes aren't really appealing to me.
Soldiers being...fit...is a trope? These guys look like 90s baseball players decked out in plate armor to me. If you think male soldiers from that time period is a trope to be criticized, I don't know that I have much of a response. Where are you getting the "bro" impression from, exactly?