Hard facts: Steam has over 73k games - and is growing at over 10k games per year and increasing. The median game on Steam earns less than $800 - down from $4k in 2020. Making a game is not hard - marketing a game is.
Word spreads fast on good games due to Reddit and Twitch. Look at the success of Balatro and how much marketing that had. The number of games you listed just highlights how little Steam filters.
At the end of the day, much of success just hinges on luck. There is no law of the universe that says that great art must be appreciated.