I'd be surprised, given the technical savviness and polish of these scams, if they weren't using LLM's that are scripted such that the bot isn't "aware" it's a scam.
The real way they do it is by offering a nice job in IT to somebody with a passable written English (read Indian), then traffic them to Shan states in Myanmar and beat them into doing it. Apparently it scales better and is more predictable than LLM.
I don't think they are. They don't immediately reply all the time. And like I say - they get annoyed sometimes and tell me to fuck off once they figure out I'm toying with them.
LLMs (either online services—which also risk getting cut off—or the hardware to run them locally) are probably a lot more expensive than trafficked workers.