You are correct but what the article is asking for is nothing out of the ordinary, in fact mods already do what the author is asking for, just not in an automatic way

And how are those mods on baseline performance? Are the mods appropriate for general audience mid range rigs? The tech industry has the capability of pure ray tracing. Game engines don't use it because the audience willing to shell 10k for PC to run it is exceedingly small. They have to target mid range specs to have an audience big enough to make money.

The solution is mods by modders for modders.