I was in Costa a bit after Easter and they still had the Easter gingerbread biscuits, chicks with pink/blue icing. A little lad just picked up the first one on the rack (pink) and his dad (I assume) immediately said no you don't want that one, it's for girls, have the blue one at the back" The lad wasn't bothered but I was just like... It's a biscuit, he's little more than a toddler, it'll be gobbled up before it gets chance to turn him into a girl 🤣
On the other hand I do think as they get older they're exposed to a bit more to "playground talk" and also just their own personal tastes get more solid. My son is 5.5 and he'll happily choose the pink sprinkles donut, the cuddly teddy, play in home corner and bake whilst also loving monster trucks, mud, somehow turning every stick into a gun despite us never doing that with him or letting him watch media with guns etc.
But at the same time, he picks his own clothes now (he's autistic and struggles with fabrics/fits so much I have to have him with me to try stuff or I'm forever returning things) And he knows what he likes! He's not into sports, super heroes or Minecraft but LOVES anything "spooky" and pirates (he's obsessed with scooby doo), monsters etc so he gravitates towards "rock" clothes (he loves listening to classic rock music!) so skulls, dragons, graffiti type designs are a big hit. He wouldn't want to wear stuff from the girls section - not because we've drummed it into him "that's not for you" but because, well, he just wouldn't want to.
He can see how the kids at school dress and while he does stand out a bit because he's not in camo trousers or Minecraft shirts, it's his choice and his little friends all tell eachother how cool they look on non uniform day!
His 2 best friends are a girl and a boy (they were all at nursery together) and he always says I bet X will wear a nice dress (and she always is) and Y will wear something with Spiderman on (which they do) do you think they'll like my PIRATE RIDING A SHARK T-SHIRT, MUM?? 🤣
I think I've lost my track a bit here, but I think I'm trying to say, it's fine if kids want to wear whatever, but they don't exist in a bubble and that's ok too.