A lot of people do think that, in my experience. I agree that this is a myth and you don't even need to try a different cuisine, simply season your food with spices which are now being shown not only to be delicious but actually good for your overall health. Things like pepper, cinnamon, turmeric, sumac and a pinch of salt and pepper can greatly enhance the taste of a bland dish.
A salad, to a lot of people, might not taste very good. But adding a pinch of olive oil and some lemon juice might make a world of difference.
I guess people see those "organic" material in the store with minimal branding and then compare it to a McMeal that looks amazing.
Whenever I cook, I try to make the dish taste great, smell great and look good. All of those are important in a meal. Obviously I fail a lot, but those are my targets in creating healthy-delicious meals that don't cost a fortune.
Someone I know recently tried to make a "healthy" meal by combining lentils with oats and just cooking them in water and throwing a small pinch of cumin in it. Now that might be a "healthy" meal but it tastes like sawdust...