I agree with your message overall, but this kind of, I dunno, martyrdom posturing ("But we're in a social climate where I don't even dare write down examples of what those more effective methods would be, because if you're not luddite enough you're the enemy.", "it's not socially acceptable to discuss alternatives to orthodoxy") is funny to see on HN. This is not Xitter or Reddit, no one is going to ban or attempt to dox you and get you fired for saying "We should seriously consider injecting reflective stuff into stratosphere" here. In fact, your message will likely even have a positive rating overall.