automatic writing

[Vipersfang]

I have a player who is fleshwarped so he as tentacles for arms...

he wants to use Automatic writing but use mage hand to hold a pencil because he has no hands to hold it...

would this work with RAW?

[Dancing Wind]

Why can't the tentacles hold a pen?

[breithauptclan]

Fleshwarp wrote:

The proportion and appearance of their limbs and features differ widely, but fleshwarps functionally have two legs, two arms, and a single head;

That should also include hands to do manipulate actions with.

Since Mage Hand is a Cantrip, I see no good reason to forbid reflavoring using that to write with instead of using the character's actual hands either.