Games like Valheim and Rust are not some pixel art games which will run on a 2GB system with an integrated GPU, they’re pretty much AA games with an AA level publisher behind them. Yes, there are some real exceptions, like Stardew Valley, but you can count them on your fingers. They don’t make even a 1% of Steam catalogue. Thus my point still stands - no one cares about low end games.
Even if they don’t make up 1% of Steam’s catalogue (though I doubt that figure), they have had real impact.
It’s ok to not like them personally, but to say no one cares is disingenuous. Balatro doesn’t require much in terms of hardware but is having a real moment right now. Stardew Valley has been killing it for 8 years. People have thousands of hours in Rimworld.
Indie games are also great for community and modders.
