This is explicitly not the case. The new management has not found hundreds of millions (billions) in cryptocurrency assets. Some other assets have surged in value and that may allow FTX to make some customers "whole" (meaning, they will not lose much money in an environment where otherwise maybe they would have strongly profited), but this isn't the same thing.
That isn't to say that 'all the money was there' or that the conduct wasn't deeply criminal and unethical, but a huge part of the shortfall was really just terrible books.
https://d1e00ek4ebabms.cloudfront.net/production/7ab64a3b-6c...
This is even from the article you reference: "FTX has benefited from a recent rise in crypto prices, Dietderich said. Its total recovery would be valued at $6.2 billion based on crypto prices from November 2022, when it filed for bankruptcy after traders pulled $6 billion from the platform in three days and rival exchange Binance abandoned a rescue deal."