My guess is that being able to generate lots of different text helps to bypass existing spam and phishing protections. Think of it as a large scale A/B test of

My guess is that being able to generate lots of different text helps to bypass existing spam and phishing protections. Think of it as a large scale A/B test of circumvention techniques against both human and automated scam detection systems. Done right, it can effectively keep getting better on its own. Then add phone scamming and various other interactive scams once it is good enough. TBH, it is pretty scary where this will inevitably head.