At least in the US, fonts can not by copyrighted [1].
[1] https://en.wikipedia.org/wiki/Intellectual_property_protecti...
[1] https://en.wikipedia.org/wiki/Intellectual_property_protecti...
So practically, they are copyrighted. Are you going to redesign the TrueType font from scratch?
To whatever degree that apples to San Francisco, does it not also apply to Apple Color Emoji.ttc though?
Or does the "font shapes not copyrightable" rule not apply to fonts that have more to them than monochrome shapes?
All the justification they need is "We're in charge and we reserve the right to be arbitrary and capricious with app approval," but that doesn't mean I like it.