I find these sorts of legal changes fascinating. The fact that the OSI didn't approve of the PHP License until pressured shows the wayward nature of their "stewardship" of "open source". As does their wonky and rights-eroding definition of "open source AI". > The proposed license does not reduce any user rights or add any new restrictions on the use of code previously licensed under the PHP License, version 3.01, Yes…
And that's the default. Trademark laws and laws that protect individuals already work like this. I'm not even sure this clause is strictly necessary in the BSD license.
I assume they've carefully evaluated this change with a lawyer.