Comment by chihuahua

Some of that attitude survives to this day:

When an OS uses any memory that's otherwise unused as a file cache, which is instantly available if an application wants more memory, but isn't shown as "unused": "This OS is terrible, I have 16GB of RAM but all of it is being used!"

When an OS doesn't do this: "This OS is terrible, I bought all this RAM and the OS doesn't use it!"