in fact, using established transportation infrastructure is so much more efficient for moving forces and logistics than moving cross country, it might be tempting to leave transportation infrastructure intact just so the enemy would be tempted to use it while you have air superiority, because that channelizes his movement and makes him substantially more vulnerable to interdiction by your airpower.
recall the epic avenue of death where a huge convoy of iraqis retreating on the main highway outside kuwait city was massacred by US air power.
Destroying opposition ground infrastructure in the process of attaining air supremacy has occurred in every major war in the past 80 years. US didn't leave the Ho Chi Minh trail alone after all. They tried to destroy a single bridge in Hanoi something like 9 times.
Using the infrastructure is not so important in a small theater. Attrition of enemy forces is.
You're both right, since both tactics are valid, it just depends on your objectives.
You may want to dislodge dug-in forces by luring them with an extraction route.
Or you could keep them pinned and destroy them where they stand.
If/When you achieve air supremacy, a lot of options become available.
Of course, this is one-dimensional, as a lot of other considerations have to be taken into account concurrently.