In theory, the generator uses its own premium account or server infrastructure to fetch the file, then hands you a fresh, unrestricted download link.
Some users use "RapidLeech" services. You input the Baidu link, and the service downloads the file to its own server. You then download the file from that server via HTTP or FTP. panbaidu premium link generator
However, that doesn't mean you can't download at high speeds. The functionality has simply moved to "proxy download services." In theory, the generator uses its own premium