It's not wholly an issue with Starship Troopers, but mostly how the audience that saw Starship Troopers was conditioned by decades of Hollywood war movies to expect to see heroes on screen and expect to root for them because literally every Hollywood war movie is about cheering on the soldiers on screen. Again, I think Starship Troopers is a great film, but the vast majority of people who went to see it could have used some kind of primer to interrupt those Hollywood-set expectations that led so many to miss the point.