Technical blog how to
How to blogs have become very popular because they answer numerous queries, "how to" and "why is it so". There is probably no question of this type that Google search would not answer using these blogs - moreover, Google itself has become so popular precisely because of the search for answers to such questions.
But there is one "but". In order for your "how to" blog to receive sufficient traffic (for example, for monetization by placing ads on the blog), it must:
A. answer a really huge number of questions;
B. answers to questions (pages with answers) must be at least indexed (and it is better, of course, to get into the top 3 search results, or even into the "special search results" - the answer block, the so-called "0th position")
That is, the blog must consist of thousands of indexed pages.
We are not touching on the issue of creating content - naturally, it must be high-quality and expert.
But even high-quality content does not guarantee getting into the top 3, not even the indexing of the page by the search engine.
How to index a how to blog
The technical how-to blog – with really interesting advice from an experienced home craftsman – was regularly updated, but was indexed very slowly, and as a result received few visitors, which is why the income from advertising the blog was extremely low, and further development of the blog lost its meaning for its creator.
Turning to the 2index.ninja tools, the blog author chose the Smart Ninja tariff, which allows you to selectively approach the number of links sent for indexing – to pay not by package, but depending on the number of indexed blog pages.
Thus, the blog author wanted to check how effective the proposed methods really are, and how this will affect the indexing of the how to blog pages.
What was done
Using Google Search Console, the blogger identified a list of pages that were Crawled (Discovered) - currently not indexed, selected potentially promising ones for traffic and sent 374 of them for indexing, paying $0.0067 for each. Total $2.5.

Result
325 out of 374 (86%) were indexed within 5 days, 49 (14%) were checked but not indexed. The status of these 14% may still change.

Not bad for an investment of only $2.5.
But if you choose the GreyNinja tariff, for example, you can send 10,000 links (how-to blog pages) for indexing at once at a price of $0.0042, i.e., the return on investment will increase even more.
Naturally, the very fact of being included in the search engine index does not guarantee high positions (and, accordingly, large traffic) - for this, it is advisable to carry out some movements on external SEO optimization, for example.
But the presence of a significant number of how to blog pages in the index is also a good signal for Google or Bing to increase the positions in the search results of each of them, and a chance that the page will be seen by a potential visitor.