I am both vegan and WFPB, so my reasons are all them equally. Being honest, I don't know how one can dismiss the health aspects of a WFPB diet as though our health doesn't matter, what with all of the diet-preventable diseases surrounding us, or the environmental factors of choosing a plant-based diet. What good are we for our cause if we're sick or dead, and destroying the planet is harmful to all life, humans and animals included. The three are inseparably intertwined, IMO.
These things are all connected, the way I see it. It is just with veganism being good for a normal, and there aren't such good reasons not to be. To remain not being vegan, you have to dismiss abusive treatment and horrible slaughter of the animals, the issues of the environments from animal agriculture, that there is still the healthier way for us, water, land, and other resources that are taken up, and that more food could be grown that would save people who are dying of starvation.
Those choosing unhealthy veganism because they are vegan for animals don't make good sense, and it is hardly reasonable, when we could have better example to others who are not vegan now. Those coming to poor health after becoming vegan will be the poorest example, and won't help animals as much that way. And some who say they were vegan, though I don't think they lived according to veganism, and gave it up, say they became so unhealthy from going vegan. I am vegan for animals, though I see the other reasons for being vegan are each reasons in themselves. I choose the healthiest way I see I can. But they are together, that veganism is the right way for people to live. Most people are just not coming to it yet, it is still needed that they do so soon. There would be no negative side for them doing so.
I might call it a magic pill as well as "just a diet". It would appear to be able to not only prevent, but reverse some pretty serious diseases. That's pretty close to a magic pill, wouldn't you say?
I get the meaning of using that expression, and saw the doctors who authored The Forks Over Knives Plan use that expression. They said if what resulted from the way of eating they showed, with B12 supplementation, all healthy effects with no negative effect, came in the form of a pill to be taking, it would be heralded wide and far in the news. It isn't as the diet it is, involving change, and medication businesses won't want that to change.
I think the magic pill connotes an ease of use. Like here, just take this pill.
If you are not already vegan, the WFPB diet is incredibly restrictive and probably requires a whole new lifestyle. Vegetarians would probably find it hard (What?! No cheese?!) Even if you are vegan it's pretty challenging. I think eliminating potato chips from my diet was really good for me but it was pretty hard. I also found the reducing of grains to be challenging. Oil free cooking was the least troublesome for me.
Then there is exercise. For most people - that is pretty challenging.
It is not hard, but I see how a transition to it is needed. The book mentioned really provides for that. I had already seen need and chose to go vegan. At first I didn't even have assurance that it would be as healthy. I have always been thin too, and didn't want to lose weight. But at this point it really was for the animals. After some time I found that book, and it was revolutionary for me. I saw how I could be the healthiest from that. Shortly afterward, within days, I had a diagnosis showing serious issue to my health. I really needed to have the healthiest way, and know about it, then.
I use grains, it is with most of that being whole grain, now.
I am afraid of having much exercise as it can have an issue to my health, though. I have to settle with the healthy way of eating being all I have for my health. But I still walk much, and the way I do is good for health, with the exercise I have from that.