Ah I see what you’re saying and you’re 100% right!! I’d be willing to bet the reason behind it is yields. Idk but with autos in specific I bet if you just breed Indicas and ruderalis they probably don’t yield well. Just a guess. Once you mix a sativa in they’ll obviously grow taller but they’re more know for those donkey dick colas as where the Indicas are know for smaller dense golfball nugs. I love me some Indica! Seems though that even photo period plants are the same way not much in then way of heavy Indicas.