But is there anything intrinsically wrong about letting a child choose their haircut? Why are you trying to suggest this is something to avoid?
It’s personal choice of course, we all parent differently and have different views.
Personally I don’t think a young child needs (or benefits) from autonomy over their haircut/hairstyle, any more than they need control over how often they bath, brush their teeth, whether they eat breakfast before school etc.
I keep my DD’s hair in a short, tidy bob as she hates clips/bobbles. Too much brushing or fuss like plaiting and deep conditioning upsets her. Long hair gets in her face and eyes or in paint/mud or catches on things. I got her used to haircuts and hairdressers from a young age so she doesn’t fear them when she’s older. She’s 6 now and enjoys having hair cuts!
I think short hair on children is generally easier and quicker to wash, dry, keep tangle-free and nit-free. Quicker to get ready for school. Regular trims is good for hair health as it removes split ends. It’s easier to keep it neat and tidy, until they’re at an age where hair suddenly becomes important (?9/10) and they want hairstyles like their peers or the latest fashions. Once she reaches that age I’ll let her choose the style and length she wants, provided it’s manageable and neat for school.
If I had a boy I think I’d just keep it short from toddler-hood, for the reasons above, and also because being mistaken for a girl constantly could be confusing?
If we lived in a culture where long hair on boys was the norm I’d be less inclined to make regular barber visits, but here short hair on boys seems very much the social norm. I’d worry a little boy would be teased or bullied for having long hair.