A year over year increase matching the same trend that has existed since 2017. The same pattern holds for every month this year except March (where there was an increase year over year of about 600 games).
If you’ve ever been to a game dev forum, you’ll see that there are at least 10x as many people who want to make a game as there are people who have made a game (it’s probably much higher than 10x).
If games were easy to vibe code, or if AI speed up game dev 10x, I would expect it to almost immediately show up as a flood of games on Steam.