One way to "fix" this IMO would be to allow proprietary apps, but keeping the 30/70 split for those to account for increased monitoring and having them confined by the same flatpak permissions as everything else, and lowering the split to 12/88 for open source apps.
Good idea. Not inline with their extreme stance of calling other OSes, and presumably closed-source, unethical though. "The thoughtful, capable, and ethical replacement for Windows and macOS"