Text is only the result of abstract reasoning, symbol logic and who knows what else. That's like doing a code review focusing on the build artifact and ignoring the source code.
Your example would maybe work if an intelligent agent had access to many compilers and reverse-engineered code bases. And if the algorithms were 1000x better than today. Otherwise it can guess until the cold death of the Universe without making progress.
Huh? A trained LLM is much 'wiser' than one that's just freshly randomly initialised.
You are right that they are still far from perfect, and we hope for future improvements in technology.