Me, I'm a real human. I would not fall to a silly trick like that.
Now excuse me, I'll just copypaste this cover letter text from the dozens of previous examples I used and edit it slightly based on buzzwords on the job description and company web page.
(Also, last year, I was in one of the events for the unemployed, organised by the municipal job services, and there was literally a short segment on the talk on using ChatGPT for cover letters. Well if the same authorities that mandate us to send a bunch of job applications every month tell us to use it, it can't be wrong, right?)