to be fair your original unedited comment was so vague no one got it until you clarified with the blog post. so maybe there is something for you to take away there
> since there's an elaborate explanation (not that it's needed)
Clearly the explanationn is needed. Most of us didn't understand what you meant. After grasping what you're asking for, I get your request, and I think it'd be nice if Apple implemented this for you and others, but I don't think iOS is broken, nor would I enable such an option if it were implemented – it wouldn't solve a problem for me.
You might try to understand that you are in a minority in wanting this, and that the current behavior is actually acceptable for the vast majority of iPhone users.
I don't buy that. It's just a tiny number of people who
1. Take the time to speak up about it
2. Speak up about it in a forum that you're aware of
Another problem is the diminishing number of people over time who were exposed to more-functional products that were standard in the past. The obvious feature requested here was present on millions of telephonic devices for decades, including cell phones. Android phones have it. But the iPhone is now 15 years old, like many of its users.
The Web is rife with requests for this feature. I posted a tiny sampling of them above.