> I get micronutrients from other sources

Looks like agree that it's not great but you compensate elsewhere. If you chose the "hard way" of limiting your menu to vegan why not pick the options with less compromises? Even paper can be food as long as you compensate elsewhere.

> Something is only unhealthy or healthy in light of everything else you eat. It's reductive to say otherwise.

Are you maybe conflating "unhealthy" with "not explicitly healthy"? Plenty of foods are unequivocally unhealthy, anything else you eat will not compensate. You don't "compensate" for eating a lot of ultraprocessed food because some of the contents of that food should not be in your body at all. You can't always "subtract" by eating other food. Not saying this is the case for you and these burgers.