A few references:
Generally, open source refers to a computer program in which the source code is available to the general public for usage, modification from its original design, and publication of their version (fork) back to the community.
https://en.wikipedia.org/wiki/Open_source
The program must include source code, and must allow distribution in source code as well as compiled form. Where some form of a product is not distributed with source code, there must be a well-publicized means of obtaining the source code for no more than a reasonable reproduction cost, preferably downloading via the Internet without charge.
The term open source refers to something people can modify and share because its design is publicly accessible.
https://opensource.com/resources/what-open-source
having the source code freely available for possible modification and redistribution
https://www.merriam-webster.com/dictionary/open-source
I haven’t read any open source licenses, so it’s possible you are correct in some technical sense, but that is not what people mean when they use the term open source.
Clearly the OP was using the common definition, or most of the post wouldn’t make any sense.
“Leaks” are a good strategy to draw attention.