Excess whitespace is extremely harmful, because it reduces, in exact proportion, the amount that can be seen, at once, of the code that actually does things. Same applies to prolix commenting. The code that does things is what people working on it need to see. A comment that explains why a thing is done might be consulted when purpose is unclear or not obvious. That is why a good coding editor grays out comment text.

Whitespace deployed very judiciously directs attention where it is needed without need for distracting verbiage.

Far more scarce than any other resource is attention. Anything that steals attention away from where it is needed most is actively harmful, creating bugs and misdesign, and knocking people out of productive flow.