Why Exposure Compensation is Essential in Photography

When out shooting in the snow, shooting high contrast monochrome on Lumix G9, the best function is the ability to quickly adjust exposure compensation using the right thumb wheel.

Which made me think:

How come nobody ever talks about how essential exposure-compensation is in photography, and how it makes photographs more beautiful and artistic?

By controlling exposure-compensation, you control the mood of your photos

For example look at these two photos. The photograph is essentially the same, but the only difference is the exposure-compensation difference. I far prefer the right photograph which has a brighter mood, and better contrast.