It’s not going to be a shitshow at all. Business will mostly move to 11 whether they like it or not and consumers will just use unpatched win10. The exact same way they did with XP and the exact same way they did with 7.
It’s only gonna be a shitshow if there is some earth shattering vulnerability found that a worm can exploit and even then MS would probably just push out an out of band update.