So it’s made of shit, right? And shit is an animal product. But barring a night of drinking or a particularly aggressive burrito, shitting does not harm the shitter; it’s beneficial and required. Also the animals in question can and do consent, does that make it vegan?
Hah. True, plenty of nonhuman creatures too. But primarily sapient beings.
Maybe, but you’d have to find a way to manage it yourself.