If you haven’t seen it, the step by step process of subversion is here: https://m.youtube.com/watch?v=Y9TviIuXPSE
America is entering the crisis phase. Perspectives are fundamentally incompatible between citizens. This leads to either civil war, or foreign invasion.
I think they realized the climate apocalypse mystic voodoo shit wasn't working so they picked something fast acting enough for people to personally feel fear. Then not only will people claim a skeptic wants to kill their grandmother, their actual feelings deep down include personal fear. Self interest. Now. Me me me. Nevermind future generations when a virus can come up and get you, AND social nazis can accuse dissenters of murdering grandma.