Every time there's a giant environmental summit, the airways will get packed with stories about its carbon footprint. A bunch of smug fuckers on Fox News saying "oh ho ho all these people had to FLY there to talk about trying to save the planet they're such hypocrites GOTCHA".
That's all I can really say to this. The idea that we should in any way dismiss or reject an advocate just because they aren't personally holding up to whatever standard you want to hold them up to... I mean sure, I guess if I found out Bernie Sanders spends his weekends in his lifted truck rolling coal it would change my perspective of him, but most people are just living their lives and trying to avoid unnecessary friction. We aren't going to solve problems by being super judgemental and telling them they suck as people, but we can probably persuade them to vote for the people and things that WILL solve problems so long as we meet them where they are.