I get tons of these. I suspect they must run on crappy local models to save money, because the ones I get are also terrible at drawing a simple line connecting my experience with the job.
I look at them with a mixture of pity and contempt. They are examples of "In the land of the blind, the one-eyed man is King" work: i conjecture that this type of "shallow customization" is going to be most persuasive with recipients who have very little exposure to slop and/or the kinds of things human recruiters used to say when visually scanning some stale copy of a résumé while on the phone with the prospect.
I get ones for projects specific languages that are not on my resume. Never mind crappy models, they could rule me out with traditional keyword matching.