There are a lot of structural challenges with relying on LLM-based trading agents, especially when they're given free rein to make real trades. These systems are highly dependent on the quality, freshness, and transparency of the data fed into them,any bias, missing context, or sudden market event can seriously skew their decisions and risks. The lack of explainability and clear oversight ("black box" problem), plus the potential for poor adaptation to novel scenarios, makes it hard to fully trust the long-term outcomes, despite initial gains. While the article shares an exciting experiment, much more rigorous backtesting over multiple market cycles is needed before anyone should consider putting real money behind this kind of agent.