I can't vs I don't want

I can't see something like this:

here

Vegans can't eat this, Vegans can eat that? By the way the content is also switched.
Vegan is not a disease like diabetes, celiac disease or all the other diseased related with food, Vegan is a CHOICE. And as it's a choice, I choose not to eat something, I don't want to eat something, not I can't!

Modified by me