As I’ve said before, why not try to reduce both?
And let’s be honest: Whenever someone post a sarcastic ‘good thing we banned plastic straws’ under a topic about CO2 emissions, they’re not doing it as a good faith argument that one pollution might avoid the other.
I’ll grant that everything else you said were valid considerations but here I disagree.
We need regulation because relying on individual choice doesn’t work.
We wouldn’t need regulation for emissions if individuals would always chose emission free products.
We wouldn’t need regulation for animal welfare if individuals would always chose cruelty free animal product or become vegan.
We wouldn’t need speed limits if individuals would always drive safely.
But people are assholes and idiots. They make choices that hurt the environment, society and often even themselves.