This is an outrageous lie; although they added the word "can" which is either quickly overseen or makes the statement useless.
But arrogant ignorant misleading propaganda is typical for the harmful mainstream media where writers are paid for words and stories and not for content and truth.
Unhealthy food and mainstream media are similar in a way.
Vegan products are the cheapest products.
Vegetables and fruits are cheap if one buys seasonal products.
Vegan high carb (e.g. bread, rice,...) and high fat (e.g. oil) products offer always cheap calories. Besides, getting enough calories in the US is not the problem according to the article.
Animal products are by far the most expensive and most harmful products. Note: They are also subsidized.