It's both good because it creates opportunity and provides opportunity to a new class of traveler but it's bad because it expands the number of people who can travel and thus negatively impact the environment.

Not much different from wanting to eliminate poverty from the world, however, we know full well a middle class person had greater impact on the environment. They consume more goods and waste more.

It's neither good or bad but something we must keep in mind as we can't wish the consequences away.