By only looking at a boolean "contains all the things your body needs", you can argue that beef patty topped with a cup of sugar is exactly as healthy.
Sure. But cooked meat also generally does not contain anything that is especially bad for you like sugar. Unprocessed meat is a healthy thing to eat. It’s not that controversial. If you’re eating meat and some vitamin c you’re not going to be deficient in anything.
There are plenty of fine vegetarian options too of course. Although some people will struggle with anemia and protein deficiency.
What are you talking about? Are you just going to say this without any citation whatsoever? What do you mean by 'healthy'?