Wouldn't destressing in other ways that don't involve unhealthy eating like going to concert or getting hella high one day or something also do the same thing?

For me no because I had back surgery a month ago. But it is also shocking your metabolism as well. Eating whatever you want doesn't equal unhealthy either as long as you stay away from ultra processed foods. It's eating above the range of calories which caloric dense foods ≠ unhealthy either.