Holy sh*t! Why are some of us so hyper-sensitive about the emotional content of punctuation and grammar in written language? People exhibit stylistic variance and idiosyncrasy all the time in our use of language. Why assume that a usage different from one’s own is intended to convey an emotional message?

I have a friend who routinely sends emails to me with the greeting “Hi, Jim,” rather than the more common “Hi Jim,”. According to GrammarBook.com (see below), his usage is more grammatically correct than the common greeting. Does that mean I should I take his greeting as a reproach to me for my use of the more common form?? I doubt that is his intention, and I simply choose not to take the first comma as an intended emotional message.

I have added this explanation in response to a comment on my earlier version:

My friend’s usage is correct according to Rule 8 for commas, as explained in https://grammarbook.com/punctuation/commas.asp:

Rule 8. Use commas to set off the name, nickname, term of endearment, or title of a person directly addressed.

Examples:
Will you, Aisha, do that assignment for me?
Yes, old friend, I will.
Good day, Captain.