Do comments that promote a user's post fall under spam?

Question

Our current definition of spam focuses mainly on someone trying to sell you an off-site product.

What makes something spam and when should I flag it?

A post should be marked as spam only if it advertises a product, service, or similar and is unsolicited or lacks disclosure.

Might a user's promotion of their own question raise to the level of spam if after posting a question/answer they start to comment this on other user's post:

This really helped understand the answer to your question: [link to the user's answer].

While the link has nothing to do with the question (e.g. clickbait).

Or maybe an outright comment about their post:

Please, someone, please help me, I need an answer ASAP: [link to the user's question]

Can a user's comments raise to the level of being called "spam" as a description in the flag of "something else" if they're linking to an (on-site) source over and over again?

I would reference: Are links to non-commercial endeavors spam? but this answer seems to be talking about off-site promotion.

Answer 1

Please, someone, please help me, I need an answer ASAP: [link to the user's question]

That's certainly not spam, but it is inappropriate use of comments. If you see that once, just reply with a link to the help center that that isn't an appropriate use of comments, and flag the comment as 'No longer needed'. If you see it happening multiple times, use a custom moderator flag and they can send a more severe warning in the form of a mod message.

This really helped understand the answer to your question: [link to the user's answer].

Again, that's not where comments are for. If the linked post really helps to understand the question/answer better, it should be edited in the question. If the question is actually a duplicate, it should be flagged/closed as such.

Finally, it does happen that a user posts a spam link deliberately in a comment, e.g. to evade spam detection. There is no spam flag for comments (because this is quite rare); just use a custom moderator flag.