At the same time, let's also not rush to hand wave away issues just because "others are likely worse". Those industries also are an issue, and the question is

At the same time, let's also not rush to hand wave away issues just because "others are likely worse". Those industries also are an issue, and the question is also applicable there. In fact, the impact of tourism on the environment and how to reduce that impact is one that is on going. In fact, exactly because it is an emerging technology now is a good time to be conscious about environmental impact. Because it is easier to address issues now than later down the line when it is no longer emerging and already ingrained.