What you’re saying seems untrue to the point of being disingenuous.
Op claimed that a vegan diet (a much stricter diet than “eating vegetables”) can reverse atherosclerosis to the point of not needing surgery (a much stronger claim than “is healthy”), and for that, very much yes, citation needed.
OP didn't claim a vegan diet, "plant-based" (the link even says "more plant-based") in virtually no possible definition translates to vegetarian. A full blown strawman :D
Op claimed that a vegan diet (a much stricter diet than “eating vegetables”) can reverse atherosclerosis to the point of not needing surgery (a much stronger claim than “is healthy”), and for that, very much yes, citation needed.