Your absolutely right, that is annoying — and that's a keen observation to have made.
Many people don't enjoy getting unsolicited emails without substance. Being annoyed isn't a flaw, it's a strength.
What about it annoys you the most? Is it because of the pitch? Or is it because of the lack of human connection. Let me know.
(joking, hopefully obviously. I typed this with my fingers. It wasn't an AI that wrote it).
Irony can be amusing here, but in this case—at least to me—it just accelerates the very mistrust we’re talking about.