I've been wanting to do this as an experiment. I exported my Reddit history (15,474 comments over the last 12 years) and I wanted to test out making a LLM bot of myself on my own instance.
I'll probably hate it, but it seems like a good learning experience.
For what purpose though? They add no value as they have 0 engagement. But as long as they are posted on dedicated instances and accounts marked as bots, I have no issue with them.