They'll lay waste to Australia then move out with not a care for the damage they've done.

Who is they?

Santos Gas Company? They are an Australian company.

With its origins in the Cooper Basin, Santos is one of Australia’s largest producers of gas to the domestic market and has the largest exploration and production acreage position in Australia of any company.

Santos has also developed major oil and liquids businesses in Australia and operates in all mainland Australian states and the Northern Territory.

Santos also has an exploration-led Asian portfolio, with a focus on three core countries: Indonesia, Vietnam and Papua New Guinea.

Was it OK for BHP to destroy the environment in, for example, parts of PNG, then move out?  Because they are doing that out of Australia, that makes it OK?