I don't get it personally - for a beginner freighters in normal view are the same as SHFs
I don't get the OP argument either - were arrarstra or OSC shuttle op and abused in combat? They could have had just had cau mount removed but be kept the same.
Imo this only makes sense If all SHFs get the unique guns - I hope the one that exists with them is just a test before they get phased into all the rest