It’s obviously blog content designed to promote your product, hosted on the company’s product website. I don’t see how the FYI is unfair.
I added it because the content was valuable but HN can be finicky about blog posts from companies advertising their own products. Trying to get ahead of indignant dismissals.
There's so many blog posts posted here that could fall under "content marketing" umbrella if you want to be strict. I feel like there's no problem with that if the content is valuable and people like/upvote it. After all this is a platform that is doing marketing for YC where YC companies are supposed to post their content too.
That "warning" also stuck out to me as a bit unfair as I was even looking for how it hooks into ScrapingBee (as I was curious how these scraping-aaS platforms interface with custom code) and couldn't find anything.