Its utilitaritarian philosophy. Its saying if you stand by and do nothing an even worse person will do things in your name. The result of nonvoters here was trump. its rather explicit. By not voting “your guy” is whoever wins, aka Trump. That is the essence of the statement.
stastically he has a 50% chance to die before his end of term if he’s an average US human. The guy isn’t exactly RFK Junior doing pushups everyday.