Agreed. AGENTS.md and skills are the documentation level from the linked post that hands AI the context its training lacks.
However, this only works if you know a better architecture exists. Most won't and they'll use the "defaults". And these defaults is what the next model trains on. Individually you can steer, but I'm concerned it won't be enough to steer the critical mass of the training data.
And it's this output of humans that we are further training AI on. Will this progress things, or will it just keep us regurgitating 2020 code patterns?
However, this only works if you know a better architecture exists. Most won't and they'll use the "defaults". And these defaults is what the next model trains on. Individually you can steer, but I'm concerned it won't be enough to steer the critical mass of the training data.