CBA reading the whole thread, but slagging off customers or potential customers is a really bad move – extremely unprofessional.
It is but I can see why it happened…
The OP was not constructive criticism, it was basically saying that this issue was s**t. No mention of what he would like to see vs what was actually there, no offer to review or write something for the mag, just a shouty rant.
Friday night, 10pm (ish) after a hard week of work, perhaps with a glass or two of wine inside hm (I don't know), Mark reads this, what do you think he's going to say?! OK, maybe a bit of a kneejerk reaction but if someone publicly criticised your work on a forum on a Friday night you'd react the same, especially if it's YOUR company that you built from scratch, that you've put years of your life and a lot of your money into.
Mark has apologised but I don't see the OP saying anything along the lines of "you know what, my criticism was a bit harsh, I'd like to see more of A/B/C and less of X/Y/Z"