There are two separate concepts your are talking to here.
The first is what a vegan is. A vegan is a defined as
a person who does not eat any food derived from animals and who typically does not use other animal products.
Why they chose that lifestyle is the second concept you are taking about and it does not alter the definition for anything other than the individual person.
There are two separate concepts your are talking to here.
The first is what a vegan is. A vegan is a defined as
Why they chose that lifestyle is the second concept you are taking about and it does not alter the definition for anything other than the individual person.