Yeah you just described hunting being natural.

Eating meat is also natural, even if meat production techniques are no longer natural.

This isn't an argument about nature though, it's about diet and nutrition. Eating animals is more nutritious for us and vegans require supplements to compensate; this is because we evolved with animal & fish meat as a significant food source. Vegan diets are inherently less healthy than omnivore ones, just like carnivore diets are generally less healthy too.

This isn't to say what vegans are doing isn't a noble endeavor. It largely is noble as it helps the planet. It shouldn't however be seen as the default or that eating meat is abnormal because eating meat is what we were built for. It requires modern dietary planning and supplementation to maintain a healthy vegan lifestyle and it might not even he possible in certain stages of life.