I am rather confused, there are units like the 250 that get mines as a vet bonus...
Infrantry build mines through the buildmenu, while the halftrack has an ability which spawns the mine. The ability can have squad related requirements, but the entity in the buildmenu cannot.
I'm sad to hear that. But their audio cue clearly mentions mines ('panzerschreck und mines'), how did that work? What was the original implementation of the sturmpios like?
https://youtu.be/-hlvsLbCQmc?t=1066
Good question, I've no idea. Maybe the voiceline was recorded before the functionality was implemented and they changed their minds.