bash (with all features) is also a strict superset of bash (with default configuration that people think is all there is to it, especially if they use macs [1])

bash (with all features) is also a strict superset of bash (with default configuration that people think is all there is to it, especially if they use macs [1]), but better. [1] If you are using a mac and haven't installed a newer copy of bash you're using a version that's nearing on 10 years old and does indeed mostly suck.