Oh yeah definitely, Starship troopers is a huge influence to both, I don’t disagree at all, the Starship troopers games seem to be a bit more serious and gritty in comparison to edf though. I’d say the gameplay in helldivers is very EDF also with the huge big swarms and over the top weapons.
For sewing stretchy fabrics my advice is to purchase an overlocker not a sewing machine, sewing machines will generally suck at stitching stretchy fabrics. If all you have is a sewing machine I recommend triple stitching if your machine has that as a setting.
I’m not a professional at this, I just repair my family’s clothes so if I’m wrong feel free to correct me.