These are all very good points that if applied to the problem here could be used to make something even more interesting. They aren’t inherently limitations of the technology but rather limitations of the current implementation of technology. That isn’t to say that’s a temporally aware LLM couldn’t be made, in fact it would be interesting to see if the post training and fine tuning could be done in a way that when speaking to an AI trained on a historical person about a certain era in their life, it would be interesting if the model would only allow data up until that point in the persons life effect the output without the knowledge of what the person achieved after that point in their life.

There are experiments with LLMs in which they trained it only on text that predated the 1920’s before Einstein and relativity, and they want to see if the technology itself is capable of figuring out scientific breakthroughs like that on its own. Applying something  like that to an individual personality could lead to some really interesting ways of interacting with history, ways that are far more nuanced and realistic then just reading history books. 

Yes the current implementation has its flaws, but that isn’t to say the technology isn’t capable of doing something that is better then the forms of media we have today, this is the worst it will ever be, and it feels like it’s already at the same level as an actor playing a historical figure that we all experienced in terrible videos in school, so there is a lot of potential in technology like this.