You're right, there were a lot of compatibility problems in the past because tools reused the same names but didn't behave the same. Sometimes they were complet

You're right, there were a lot of compatibility problems in the past because tools reused the same names but didn't behave the same. Sometimes they were completely different like ps - the BSD and System V versions are totally incompatible. There were attempts to unify some tools with something new, for example pax (which was supposed to replace the incompatible tar and cpio, but which basically nobody uses). These days most tools are getting new names (ripgrep, exa) where in the past you'd just call it the same thing. I think that decision has freed people up from having to maintain backwards compatibility with the GBU tools - which weren't always backwards compatible with the tools of the same name that they replaced, as you point out. Once you lose the requirement to be compatible you can actually rethink how the tool should be used and not worry about a decision that was made by someone in the 70s.