Actually, if I understand Boney right, an radical/reckless elf could cast an 'codified' version of Rite of way just as well as a human wizard.As I understand it, an elf literally can't cast a spell unless they know how and why it works first. A human can YOLO it instead.
That's not a "won't cast because it's sloppy", that's a "physically impossible to cast for an elf".
An elf could never cast Rite of Way, no matter how many times we showed it to them, because in theory it doesn't work at all. Seriously, we wasted like, an entire AP doing the maths trying to calculate it, gave up, and used intuition to make it instead. An elven mage can't do that.
But they won't understand it if they 'opened the bonnet' to look at the detail of the spell.
And elf's are rarely willing to use spells that they don't understand as that's how you 'fuck up' and get arcane marks.
It's not 'cant' it's 'not worth it for them to try'