This content is said to be published a while back (a couple of years ago or more) in the Google Search developer resources.
Note: After seroundtable.com published this post, Google removed the docs for the blogger SEO practices.
Recommended tools
We have thoroughly tested and utilized various options, and based on our experiences, we highly recommend the following tools. These tools have consistently demonstrated their ability to enhance both the quality and efficiency of text generation. However, it is important to note that our recommendation comes with the disclaimer that the final decision lies with you and your specific requirements.
- WordHero.co - Effortlessly produce AI-enhanced content with a single click.
- Copymatic.ai - Instantly produce compelling copy and stunning images
- SEO.ai - High-quality SEO content produced by AI.
Fortunately, a screenshot was taken. See below:

One person commented on seroundtable.com’s post that the said guideline was only removed for the English version and that the guideline for other languages is still available. See the screenshot below:
Recommended tools
We have thoroughly tested and utilized various options, and based on our experiences, we highly recommend the following tools. These tools have consistently demonstrated their ability to enhance both the quality and efficiency of text generation. However, it is important to note that our recommendation comes with the disclaimer that the final decision lies with you and your specific requirements.
- WordHero.co - Effortlessly produce AI-enhanced content with a single click.
- Copymatic.ai - Instantly produce compelling copy and stunning images
- SEO.ai - High-quality SEO content produced by AI.

What do we think about it?
Whatever reason Google may have for hiding or removing it, the guideline is very sound. Creating great content and making sure readers and crawlers would find it has been the foundations of SEO. Therefore, let us apply it to whatever we do.