Only on older or low end single burner gas ranges is that true. Most newer gas ranges have a second burner inside the top of the oven for broiling.
Simple way to tell, look in the oven, if there is a burner in the top of the inside of the oven and there is a divider in the drawer area and you can’t see the oven burner, it is for storage.
My new oven has the top broiler but the one I replaced it with had only the bottom burner. I guess they got tired of people burning Tupperware:0)
The old one was about 5 years old.