What are the motives? Follow the money? Who profits most might give an indication of who is more likely wrong.
The Climate Town channel on Youtube has lots of video's on this, such as this one: https://www.youtube.com/watch?v=1J9LOqiXdpE
Using gas is not actually necessary to have all our modern conveniences. In fact, it is fucking stupid to rely on continuous resource extraction, deleting our fuel supply to create energy, when we can get it continuously for free from the environment with a minor up-front investment.
It is not 100% our fault. This is only like blaming it on Smith & Wesson if Smith & Wesson had created “pacifist guns” that allegedly solved societal violence, or if Smith & Wesson spent huge amounts of money trying to convince people that guns are not actually dangerous objects.
The facts remain that Greenpeace did in fact attempt to slander (legal definition) the big oil corp.
Maybe you support "win at all costs" in this fight, but don't pretend one side is pure and honest.