Because they watched Mecha Anime and the Greater Good appeals to their autistic communist sympathies.
Be Imperial Guard
Brody Diaz
Aiden Gonzalez
>be Squat
>get squatted
Thomas Hall
>be Sororitas
>be woefully underrepresented both in-universe and IRL because ancient monopose models are horseshit
Samuel James
...
Ethan Foster
anti guard fags are gonna shit all over any 'reasonable marines' approach to guard. because anti guard fags are either eldar loving heretics, or tau faggots, or MUH MUHRINEZ IS DA BEST fanboys.
Joshua Gray
...
Austin Long
b
Connor Phillips
u
Kevin Parker
In bed surrounded by whores
Carter Baker
The Guevesa still worship the Emperor, they just aren't as radical about it. Sort of like how you got ISIS and then you have the non-terrorist muslims.