Here's the thing for me, I grew up in a big football family and town. My older brother was a star athlete, captain of the high school football team, first team All State, big college career, bowl games on TV, drafted by the pros.
In high school and college I think of all the player's adoring girlfriends walking around wearing their jerseys, mooning over their guys. Heck, in college I even wore one of my boyfriend's hockey jerseys as a nightshirt. So when I see these type of sport uniform shirts, especially a very literal one like the Rodarte, worn as "cool" fashion on a grown woman (outside of tailgates, parties and game day), I have this not so positive association, sort of and including how I see the Victoria's Secret Pink Varsity line on anyone over high school age. Hence, the juvenile and cutsie.