@xankarn
To strain the pollution analogy a bit:
When a company puts something in the water that causes human cells to become cancerous, we don’t say “well you shouldn’t drink that” (much pollution is effectively unavoidable) or “well it’s your cells that got cancer.” Instead, we say, “This damages humans. Stop putting it in the water.”
There’s a certain point where it’s about the human body itself, not individual choices. That it’s in the brain doesn’t make it less toxic.