you're saying that if someone types in "How to do this?", all Google cares about is finding an answer that says "Here's how to do that". Is that right?
Yes, because the user intent is clear.
However, this is all dependent on how much data there is to sift through. For example, I can search for how do I cook with X kind of cooking tool. If there aren't many people searching for that phrase, Google can still know that this is an informational query and return some forum posts, blog posts, etc. But at the bottom half of the SERPs you'll see commercial results. That's because there is less degree of certainty, the cause of which is not a whole lot of people making those queries.
Also take note that ranking factors can play little to no role in some of those queries. There are algorithms outside
of the Core Algorithm that can decide to promote other pages to the top, regardless of their poor ranking factors score, based on their ability to best satisfy a query. These are the Modification Engine algorithms. I wrote a blog post about that a couple months ago. I call them quirky serps. SEOs constantly get hung up trying to diagnose competitors and often come to the wrong conclusion because they're still stuck in the 200+ ranking factors paradigm.
Ever see a web page ranking that has few links or maybe poor quality links ranking? Ever see a web page ranking that has very little information and even a lot of images? That's the modification engine working to promote a site that has poor ranking credentials.
I saw one site earlier this year start to rank because it was a California based site. A little digging around and I discovered that most people making this particular query lived in guess where? If you guessed California you're right. My observation was that Google promoted this clean and non-spammy site that had poor ranking credentials because most people typing that commercial query were from California, making this site more relevant.
That site had little content to explain its high rank. It had very poor inbound links. You will never diagnose why this site ranked unless you look at it as I did, through the lens of user intent.
That's why I say that the role of the 200+ ranking factors in powering the ranking ability of a site are diminishing. There are things going on outside of the core algorithm related to user intent that is overruling links, heading tags, etcetera.