The 2700X works on motherboards that will be supported till 2021 when the first non-AM4 Ryzen will be released.
nowhere until now that you've proven yourself that the 9900k is a better chip that you've taken platform upgradeability into accounthang on amd shill, don't change the goal posts now.
everything you've posted thus far was how the 2700x is supposedly the better chip. why move the goal posts then?