When I (46) was at primary school there were quite a few girls with short hair, and long hair was rarely much below shoulder length. Girls often wore plain t shirts, jeans, unisex trainers, PE kit was exactly the same for boys and girls.
When ds (22) was at primary there were 3 girls with short hair, most with shoulder length hair and a few with longer hair. Clothes were a little more separated by gender stereotypes, but there wasn’t the sea of pink that’s so common now.
My youngest has just left primary, the vast majority of girls have very long hair, one has shoulder length hair, one had short hair, and I understand is identifying as non binary (at age 11). Up until the age where girls ditch pink for grey hoodies and leggings there is now a big gap between boy clothes and girl clothes, and very little flexibility for girls which was the norm 40 years ago.