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.
