I've just thought are we just writing crib sheets here for predatory journals to work through, so they don't use 'Greetings of the day' or use names such as John Smith for journals published in USA and Chuck Todd III from a UK journal.
Surely even chat GTP could write a better email for them with fewer errors. I wonder if they are badly written so they only get responses from people they can scam like financial phishing emails. They are badly written on purpose to weed out the people who wouldn't fall for scams so they don't waste their time building up the confidence of those who will never give them money. Are these journal similar?
Do they only want people to respond who are new to academic publishing and need their egos stroking. As most of us probably have never responded to an email like this, do we know what the follow-up emails are like? Once you submit a paper do they accept it and then request high APCs, or do they want more for English language editing or proofreading? By then a novice but gullible researcher might try to find the funds as they are just happy their paper has been accepted quickly and they can get it on their CV.