Headcanon that an Alderaanian jedi came up with Padawan braids.
On Alderaan, braids are so popular among the planet's people because they symbolize heritage and family. I imagine some jedi thought of this custom when they got their own padawan and decided to carry it over. Because not only does the braid show a jedi is in training, but it also links them to their master. From the moment they recieve it, they are family, and that padawan is now a part of a lineage.
Other members of the Order asked about it, and after it was explained, they thought it was a great idea. Asked if they could do it for their own padawans.
It's represented the closest thing to familial ties in the Order ever since.
I imagine that the process of braiding is done in the early days of the arrangement, and it's a time where master and padawan spend time to know each other. It's so deeply personal because it's what solidifies the bond between the two jedi.
It's also said that taking braids down on Alderaan is an extremely intimate act, and that it's a task usually delegated to loved ones. Having a padawan braid removed by anyone but their master without permission is an infringement and kind of an insult. To have it forcibly removed by the Order is the equivalent of being cut off.













