This was before AI and certainly must have been quite an effort to pull off plausibly. Imagine what is possible now.

Invent an alternative history in an afternoon or two and gaslight the gullible into your version of reality. I wait for the day where a company is ordered to hand out their communication to a court and instead of doing so hands out an AI invented but plausible one.

I would not doubt at all that that has already happened. Lawyers have already been caught with AI output:

https://www.cityam.com/lawyer-struck-off-for-using-fake-ai-e...