Food is not vegan

Veganism is a philosophy and way of living which seeks to exclude—as far as is possible and practicable—all forms of exploitation of, and cruelty to, animals for food, clothing or any other purpose; and by extension, promotes the development and use of animal-free alternatives for the benefit of animals, humans and the environment. In dietary terms it denotes the practice of dispensing with all products derived wholly or partly from animals.

How can food be given a label which itself does not preclude animal-products, rather the exclusion as far as practicable?

I’ve been told that vegans will eat animal-products for survival, as it suits the ‘as far as’ and ‘practicable’ specifications.

So how then, is a given food item labeled as an ethical philosophy, which allows for unlimited variation based on context?