Saya tidak akan makan daging = I will not eat meat
Maybe for a week, before eating again. Like a target, or goal.
Saya tidak akan pernah makan daging = I will never eat meat
P/S: "Tidak akan pernah" also sounds full of emotions and determination to not ever do it. :)
A sentence about someone saying they won't eat meat is not "vegan politics." And besides, vegans and vegetarians have just as much right to learn and practice with sentences that might come in handy to them as anyone else. Get over it. Imagine feeling oppressed by the inclusion of sentences that don't pertain to you.