I really wish this responsibility was something hoisted up into the FS and not a responsibility of the drive itself.

It's ridiculous (IMO) that SSD firmware is doing so much transparent work just to keep the illusion that the drive is actually spinning metal with similar sector write performance.

Linux supports raw flash, called an MTD device (memory technology device). It's often used in embedded systems. And it has MTD-native filesystems such as ubifs. But it's only really used in embedded systems because... PC SSDs don't expose that kind of interface. (Nor would you necessarily want them to. A faulty driver would quietly brick your hardware in a matter of minutes to hours)