What if brain chemistry is just an excuse?

This has to be the single fucking stupidest opinion I've seen anyone voice whole year. Jesus fuck, forget anything I said about how I think you mean well, because you clearly don't. You're a fucking walking and talking example of the Dunning-Kruger phenomenon who has their head so far up their ass that they think brain chemistry is an excuse, and that your fantastically idiotic opinions clearly mean you're wiser than the rest of us plebs when you can't even process the thought that maybe mental illness could affect how much someone exercises. How you manage to function in society without dying of drinking bleach is completely beyond me