Are you familiar with Mogdilani-Miller? Being able to pay off debt does not increase the value of equity. The capital structure has changed but that makes no difference for the actual value of the business (which is determined by cash flows).
And, ofc, it is massively value-dilutive in practice for shareholders. Debt is extremely cheap and equity is expensive. And, in this case, massive amounts of value have been destroyed by issuing equity at a valuation that can't be sustained by cash flows. Indeed, what has happened is the exact opposite of what you think has happened: the share price has increased, and that has given management the opportunity to destroy value by rinsing shareholders. Debt holders that were facing total loss have been bailed out by equity. Whatever the value of the debt was, that is the close to the amount that has been lost (because the value of that debt was close to zero).
This is Corp Finance 101 but the marginal investor today doesn't understand this (unf, debt investors do, bankers do, mgmt do...they have made out with a couple of yards, equity got rinsed once again). Nothing goes anywhere in finance. All that is happening in AMC and GME is people trading capital loss between themselves (and debt investors finding someone to buy their capital loss at 100c in the dollar).