One thing you can do is shun employees of associated companies (Amazon, Tesla, Facebook) and refuse to give them a job. That requires some sacrifice though.
They got there by getting us to the point we’re at now, by burning fossil fuels and offloading many of their social ills to other regions. By all means, let’s improve education and get more money in people’s pockets. But degrowth is much more likely to be accomplished through fascism than by raising the standard of living globally in a way that preserves regional independence.
How is that easy to accomplish nationally let alone globally? What if there’s places that buck the trend, or don’t want to incentivize low birth rates in this way?
Do you have children? How do you propose to convince or force others not to have children without devolving into something that could reasonably be called “eco-fascism”?