That is a dumb standard. You should do what someone says, or not, depending on whether their argument makes sense. That they are hypocrites is irrelevant. In this case, Greenpeace's argument is silly.
So then should you should ignore the silly argument process?
That is neither sensible nor reasonable. The moral compass greenies and environ-wackos use to elevate their superiority and shame others is particularly foolish. To disregard it is ignorant.
When greenies practice hypocrisy is absolutely relevant. It is very easy to promote ideas that make sense in an unreasonable context. As a result their proposal is not sensible.
Electricity during the day is not fungible with electricity at night. It is very difficult if not impossible practically to store power plant-hours worth of electricity.
Clean vehicles are not equivalent to other Motor vehicles (especially aircraft) that operate with fossil fuels.
Mr Greenpeace, you and others committed to saving the planet should only use resources that utilize renewable energy sources.
To say ostensibly by one's actions, "I pledge to save the planet only when it's convenient." deserves a reply of STFU
It's about politics. Greenies and environ-wackos hypocrisy must not be deemed irrelevant, especially "for the greater good".
Controlling "the others" is what it's about. Never forget that.