How is this good? Copyleft licenses are also being ignored.
I agree, which is why I license my work under copyleft licenses such as AGPLv3 so that anyone has to make their modifications public too.
I think LLMs (especially closed-source models) will make this worse.
I wonder what communal answer you have for someone who would say, "moi2388, your work will be now done by moi2389. Thanks and good bye."