[minimaxir]

Rather in the context of the "link to a paid product" or a startup they own without disclosing it, as the OP was implying. I should have clarified.

For comments linking to my own blog/projects, I very intentionally a) disclose I've written it and b) try to only post it when it's extremely relevant to the topic at hand.

[savingthrow]

Sure, but Parent poster is linking to accounts who are also making the same disclosure. "Here's this product I ahve". And while I didn't look through the entire posting history of the linked accounts, the mentions don't seem too frequent.