Could Vaccines & Water/Food Infiltration Have Already Installed Covert Kill Switches in the Population?

Could vaccines and other methods usurped have already installed covert nanotech kill-switches in the public perhaps able to cause death or even induce pain at the command of those with classified neural neutrotech if and when we fail federal metamorphosis and are recatalouged as an incompetent species able to be colonized by the implicit superluminal dimension beckoning our metamorphosis?

There at least would be nothing preventing such possibility under recession's burden through civil preponderance, implying that we would need to be taking the accordant safety measures against such potential, implicit to quantum advent.