Martin's article pleads with readers not to be pedantic when using the term, but offers no alternative definition, beyond 'let people use it when they can read source code'. Perhaps that's the proposed usage you and Martin prefer?

If I'm understanding your position correctly, perhaps you would agree that Ocarina of Time has now been released as open source?

https://arstechnica.com/gaming/2021/11/reverse-engineering-t...

If so, the term is uselessly vague, as it says nothing about the rights of the licensee. In this sense, 'Free Software' has much more meaning...perhaps RMS was onto something!