One is that the previous note said for non-profit use which could be interpreted as part of the license terms I suppose? While now it’s specifically under the G

One is that the previous note said for non-profit use which could be interpreted as part of the license terms I suppose? While now it’s specifically under the GPL you can sell the source and any modifications. But as you say the assets are still not covered and there are already more modern engines to play doom under other licenses anyway so…