If you think someone is abusing the site, email the mods, this kind of accusation/meta in people's Show HNs, especially as a first comment just adds noise and can derail the whole thing.

Hey there! I've been on the site since 2015 and use it every day. Admittedly, I have posted a number of Show HNs since then (8 or so from my count), but didn't consider this usage "primarily for promotion" but i'll keep it in mind, thanks!