Am I the only one who's really interested in the actual bot? The article doesn't say a lot about this, but from what it does, I can't figure out the approach us

Am I the only one who's really interested in the actual bot? The article doesn't say a lot about this, but from what it does, I can't figure out the approach used. Did he scrape LinkedIn? I would say no, LinkedIn has a high level of understanding what bots are. Did he scrape some random websites? How did he apply to a different number of jobs in two different versions of the software? Was the whatever job posting his bot was looking at drastically changing the number of open positions or something? Also, how did he tweak the input over time? Did he had some set of, let's say, 10 different versions of the resume and the cover letter, and then the bot just chose one randomly or was there something else? There's so many things I'm unable to figure out on the technical side from the article that I'm leaning towards this whole "I built a bot" thing is an over-exaggeration from the author to get the message across.