Can anyone explain why the SUBJECT LINE of the email was REDACTED in this blog post intro other than to give a false sense of being already drawn in to the emai

Can anyone explain why the SUBJECT LINE of the email was REDACTED in this blog post intro other than to give a false sense of being already drawn in to the email contents? I'm not after shallow interactions today and I would use it (much like a dumb spam filter) to judge a new sender's respect for my time expecting them to have stated their business with total upfront clarity, not mystery.