Even when not accepting outside contributions, to fulfill their long term support commitment through 2050, they might have to make changes to their current core team.
If they do, then they will have to find people who embrace Christian spiritualism. That's going to be a lot easier than finding Lisp devs. Similarly, Christian institutions seek Christian employees and they fire those who cannot abide.
Can't a software project be like a Christian church?
Personally, I don’t have a problem with a software project being run like a church. Don’t know what the legal situation is.
How common are those views in question tough? I’d say about 9/10 Christians I know from Europe and Latin America would find several of these points too extreme. But yes, that leaves probably still more people than lisp devs …
I don't understand why he didn't just use MIT or CC0 as license.
It gives the same rights and the same limitless nature, so why use an arbitrary license which might cause problems in some countries ? And also makes the contribution workflow more complex?
MIT requires that a copy of the license is distributed with the software—which means it is not strictly public-domain equivalent.
CC0 was not intended to be used as a software license, and IRCC includes a clause that the author withholds any patent rights, which which has its own set of concerns.
In practice, either of them would have worked fine, but part of the beauty of public domain code is that you can avoid having to specify a license.
There is no license. And all the contributors are in countries that recognize the concept of public domain. Why should they concern themselves with the niceties of licensing in some countries? How would choosing a different license guarantee a different outcome in those unspecified some countries?