Congress can't amend the Constitution, and it takes a much higher bar for them to even propose amendments than to pass normal legislation. So, no, you can't use the debt ceiling (which isn't even nominally a legislative limit on Congress—which would be unconstitutional, as Congress cannot bind future Congresses—but an additional limit on the executive alongside budget limits) to make an argument about the prospects if there were a Constitutional limit on Congress’ part to authorize borrowing.