Imagine that whenever an oil company starts a new drilling project, a journalist goes straight to the drilling site, reports the number of climate activists protesting there, and leaves immediately. Reading news articles about the number of protestors at each drilling project is the primary way members of the public form opinions about whether to support pro-climate policies. Unfortunately for the activists, it's very difficult to predict in advance where the next drilling project will take place.
In a world with this highly-contrived setup, the effectiveness of climate advocacy hinges on how quickly activists can travel from protest to protest. It turns out the fastest way for them to travel is to charter a fleet of jumbo jets.
The oil companies in this world periodically announce cheaper and more powerful kinds of fuel. Some climate activists create a plot demonstrating that these advancements allow airplane cruising speed to double every 7 months. Unfortunately, this improved fuel is even worse for the climate. But the climate activists have calculated that the negative impact of their airplanes is minuscule compared to global oil consumption, so they always use the newest fuel as soon as it's available.
The climate movement needs people who can retrofit their airplanes to work better with the newest kinds of fuel, predict where the companies will drill next, and so on. So many esteemed activists are experts on airplanes and oil. As you might expect from a group of self-selected aviation/geology/chemistry nerds, many activists find the latest advancements intellectually interesting; they joke that when reading announcements about new jet fuels, they often have to correct their own excitement by remembering that “this is bad, actually.”
While these climate activists aren't obviously doing anything wrong, this is a pretty awkward situation. Many people may be dismissive of a group of oil power users protesting oil; they may wonder if some ulterior motive is at play. Setting aside PR, it's quite unusual for one's day-to-day work and enjoyment to depend on advancements from the companies one is working against. I imagine these activists may be prone to blind spots or missing moods.