Thanks for sharing this information. It's a very good observation. It's always good to know how these thing work.
To me it would make sense that games that are marked as "In Development" don't appear in Game but that their devlogs still appear in designated places for that.
And then to start counting the game as released and show it on "Most Recent" when it goes to "Released", "Prototype" or any other stage where you have something playable.
Maybe the current implementation was just easier/faster and given that effects of "Most Recent" tab are limited they just didn't bother doing it any other way. But yeah, I'd prefer to have more info on that, like how Steam does it. I don't think knowing such things would make the system easy to abuse or something, it would just give more clarity to developers who are putting a lot of effort into their games and expect at least a little push from the platform.