Its also important to get the maximum engagement from the scammer. Text produced is work and time. This is the only thing you can cost them, so its time to engage chatgpt and have them stuck in a telenovella.
Modern lawyers use preproduced text blocks for their letters. I would like to believe, that scammers do the same. Probably they even have figured out what phrases are the most effective for good engagement.
Their early emails are often boilerplate, but once you get them out of their opening book, they have to write their own emails. I've often seen in advance fee scams, after the first few emails, there's a sudden decrease in the quality of the text, that's how you know they're writing their own emails
The article might have been updated, but it addresses your point now. This particular scam used emails consisting of one persinalized paragraph + a few slightly randomized paragraphs straight from the playbook.