The choice was between having enough to eat and not having enough to eat. In poorer, rural areas it really may not be a choice.
I'm not excluding that possibility. However, the number of people in situations like that is pretty small. Most people in the Western world live in urban or suburban areas where there isn't much to hunt.
In general, agriculture is a much more efficient means of producing food, and between the low prices of food and the availability of government subsidies it takes a very specific and unusual set of circumstances for someone to be excluded from our agriculturally-based food supply against their will.
And of course, it's true that if someone wants to produce their own food, it takes money and a lot of work, but hunting also requires that one have access to (if not own) land where something exists to hunt, and requires a significant amount of effort, skill, and resources to do on a regular basis (permits, weapons, equipment and facilities to store and prepare the meat). It's hardly the path of least resistance. For the people I know who do, it, it's quite an expensive and impractical indulgence, something they do as a hobby. I can't apply a blanket statement to say that the same is true for
every single individual as there are likely some exceptions, but I feel comfortable in saying that the typical hunter in the United States would not starve without his hunting license.
And keep in mind that the article the OP referenced wasn't exactly about someone in poverty trying to feed themselves.
The ability to have the variety of foods necessary for a healthy vegetarian diet on a large scale is part of the reason wildlife habitat is being destroyed.
I'm not sure where that comes from. As far as I know, the net food production in the world is already well in excess of need, it just isn't distributed equally. Also, a great deal of habitat destruction is for animal agriculture. I doubt very much that this is the case; animal sources of food are inherently a less efficient use of land in terms of usable food per acre per year, simply because animals are farther down the food chain. Again, there are rare exceptions, but it's not as if hunting is a low-impact, high-yield means of food acquisition.