I recommend you stop trying to analyze something you don’t quite understand. Bottom life, you just came into the US, it is highly recommended you abide by the 90 day waiting period before demonstrating your preconceived immigrant intent of filing for status adjustment.
Your H1B visa wouldn’t have been approved as a matter of fact if you had told the CO you do not plan on leaving the US at the end of your granted stay or that you plan on filing for adjustment of status once you get to the US.
The section you quoted above is equally applicable to you! B1/B2 or other NIV such as F1 will be as eligible to process AOS as a H1B status if they can demonstrate they merely had a change of heart after entering the US - this can be demonstrated by waiting for 90 days before filing. Your having a dual intent visa does not mean you’re automatically eligible for AOS.
You ought to have waited back at home and process CP like I suggested to you a couple of months ago, if you’re not willing to wait.
Anyway, you don’t have to listen to me, you can go ahead and file right away if you wish.
Last week we had an interview and today we found out we got approved.
Interview took around 20 minutes. First immigration officer (IO) represented himself and asked if we understood the purpose of the interview. Then he double checked information from the application. Specifically our names, our dates of birth, asked about my wife's job abroad. Then he asked several security questions (those from the long list with "yes/no" answers). I'm on H1B, my wife is on H4. To make sure we maintain the status, IO asked my wife if she worked, than he asked me, if I worked. We had no issues with that, since we maintain our status properly. I had my pay-stubs and working agreement attached to the application. The next several questions were the most stressful for me. He asked when did we get the DV selection letter, and then he asked when did we get married. We actually got married about 2 weeks after I downloaded the letter. He asked why we got married. I started to tell a long story about my feelings. Than he asked documents that prove we live together. We were prepared, and I gave him rental agreement, rental insurance, medical insurance, car registration and car tittle with both of our names on them. I had a bunch of other documents confirming our relationships, but he said that's enough. After that he said the interview is over and he needs to review the documents and we will get a letter in about two weeks. We think he actually sent the letter the same day. I really appreciate that person did his job well!
After the interview was over I honestly told the IO my biggest concern was that we potentially could be ineligible for AOS since we got the selection letter before getting to US by H1B. He said we're good, because we maintain our status properly. He also gave an example - if a student that came to US to study doesn't study can be ineligible for AOS.
One more note. The IO said he also needs to check if there is still quota available for our country. I'm from the european country where DV program is the most popular by statistics. So it was also a concern for me. If you are a person from such country, and even if you have a low number (like we did), AOS takes about 4 months, and at that time you can be out of quota. Otherwise if you go through CP, your green card can be approved the same month your case is current. We submitted our application in December and got approved at the end of March.