There might be a linguistic difference here. 

I’m not saying that inexpensive foods are bad. People often describe junk food as being “cheap” or “affordable” and I’m saying that those are inappropriate descriptions because junk food is an excess expenditure. It’s not a substitute for healthy food. 

Undisciplined

HealthAndFitness

Daily Health Principle: Junk Food Isn't Food

> "Cheap"/"affordable" foods are neither cheap nor affordable if they are bad for your health. They are pure waste.

I don't agree. When you come to India and eat the traditional recipies (often people call them hunk food), they are all delectable, cheap and healthy. 

When I first started teaching my lunch for years has been [kadhi Kachori](https://www.slurrp.com/article/rajasthani-kadhi-kachori-for-breakfast-try-this-desi-recipe-1679807704003) or Samosas. TBH I never had any medical or non medical issues due to eating them for years. I think saying every street food/quick recipe suggests a narrow perception about food. Food prepared with quality and fresh ingredients is never bad for health. 

However I agree if you can't find/afford quality food, it's better to stay hungry. 

In my opinion any good can be considered junk food if it lacks freshness, hygiene and quality. 