Is this just to avoid the use of 一 as a radical? I realize modifying the radicals could cause some issues for people, but this feels really wrong given the haircut temple had to take.
They do try to go with fewer radicals when they can, because adding more can make the mnemonics unwieldy.
I mean, it’s obvious from looking at it that it’s not exactly those shapes, but just like with the English words used to aid in pronunciation, it’s just to remind you. They don’t hold to the exact shapes a lot of the time.