I think this comment is important in understanding why so much open source software doesn't have backwards compatibility

> If removing these aliases (retroactively, if you want to clean up your act you have to remove this from all versions in which this was ever released) breaks things for some people, then you can go and send people out to help them fix their issues. You knew it was a hostile action, you broke things, you fix them.

retroactively remove things from old versions? This is crazy