Whether there is anyone "responsible" is really rather irrelevant; fact of the matter is that just like how any invasive species can literally bring a thriving and divers ecosystem to a full collapse, so too will the very thing that drives the whole world's engine no longer be able to drive the whole world's engine if it is choked off.
I am actually way more interested in the insanity that leads to people simply not being able to comprehend basic things like cause and effect like this, than I am in the invariable outcomes it will have. It is purely magical and adolescent thinking, akin to the literal magical thinking that is well documented in various forms where some blessing or shamanic "force field" convinces people that somehow the laws of physics and reality will be negated and, e.g., bullets or enemies or diseases will not be able to bring harm. It's a kind of suicidal mania, regardless of even whether it is produced or some abnormality, let alone who produced it.
When you are trying to, e.g., cure cancer with the last ditch effort in hopes of a kind of pyrrhic victory through chemotherapy, what does it matter whether that cancer is from some 30 year old contact with asbestos or from getting a single sun burn last summer. Fact of the matter is that the cancer is real and it will kill you if you don't treat it and that means death, the end, snuffed out… only as it relates to this topic, it means the end for civilized humanity, civilizational collapse on the scale of the eastern Mediterranean bronze age civilization that was lost to history for thousands of years until rather recently.