Greta has been using public transport but she is supported by a team of people and a media hype which increases her CO2 output beyond any normal person. Her personal contribution would be a lot lower had she just stayed at home and not bothered.
Many in XR and who support XR live in the Twitter and social media sphere. Social media is powered by some of the most power intensive data servers in the world... Where does that electricity come from?
We then have people coming from all over the country travelling to protests on coaches, diesel trains, they then eat food from London food places which contributes to pollution.
What about the Police resources, their travel and their food needs etc? What about peoples public transport journeys who were inconvienced so they had to drive or get a taxi?
What about Emma Thompson taking a 12 hour flight from Los Angeles to attend XR rallies? Or, Prince Charles and his son jetsetting around the world to tell us to stop flying?
It's a fashionable fad and a hypocrisy which in reality has only increased our CO2 output.