Can individuals impact the environmental crisis? Sure, in aggregate. But the biggest gains come from focusing on the largest groups. They have the biggest proportional impact on the environment.
Did the steak I ate last night contribute to global warming? Sure did.
Did that steak contribute more pollution than the entire fleets of naval ships we keep deployed across the globe to 'project power'? Hardly.
Did my steak contribute more pollution than the tanks and next generation fighters the US keeps ordering and building (and which have little place in today's environment of asymmetric warfare)? Nope.
We can talk about personal responsibility and organizational responsibility for pollution at the same time. And solving the issue of organizational pollution will have a much quicker and longer-lasting effect on the environment than pushing people to stop eating so much meat.
[1] https://www.chicagotribune.com/opinion/commentary/ct-perspec...