Sure, they're actually impressively short, but are we saying that all software devs must understand the state of IP law and its associated terminology and pitfa

Sure, they're actually impressively short, but are we saying that all software devs must understand the state of IP law and its associated terminology and pitfalls? As an unfortunate side note, none of the licences you listed have any terms relating to patents, (unlike the apache licence, which is considerably larger) which is one more tangled-web that a dev has to think about.