Microsoft isn't ending Windows 10 support, it's all just marketing to encourage people to move over. They already partially backed out by saying they will provide updates for (At least) 1 more year if certain conditions are met, but they will probably end up giving everyone the critical security updates anyway. The quantity of windows 10 machines still being used is just too large to allow some vulnerability to permanently smear microsoft because 40% of all windows PCs got hacked or something.