Yea I guess that's true, I feel like it only matters the first time you do it though. Like if year 1 you do $1T of debt, your debt burden after 1 year is $1T. In year 2, you inflate 50%, but need to borrow $2T. Your debt is now, in year 1 dollars, effectively (1 + 2) * .50 = $1.5T. Year 3 you do it again and take $3T in debt. Now effective debt load (in year 1 dollars) is (1.5 + 3) * .50 = $2.25T. So effective debt continues to increase despite the inflation.

But each time you take more debt on, you presumably get some value from it, and if that value is greater than the interest on the debt in real terms you come out ahead. It's not money for free, it's money for cheap.