> ...no matter what the state of your gut microbes.

Or your mental state. Or working hours. Or illness and injury. Or depression. Or lifetime habits, possibly due to choices your parents made.

Yes, it is all our own faults. That doesn't mean it is easy to change. Nor does it make somebody a lesser person for having made poor choices.

BTW, It is also your own fault for everything else that is wrong in your life. Ever answered a question wrong, made a mistake, messed up a project, gotten a speeding ticket, injured yourself, or hurt anybody in any way? All your fault.

Perhaps throwing blame at problems just isn't a good approach to making things better?