The solutions you describes are designed to keep calendar in sync with Earth rotation around the Sun and around its own axis. However, there is no real need to

The solutions you describes are designed to keep calendar in sync with Earth rotation around the Sun and around its own axis. However, there is no real need to keep computer timers synchronized with Earth rotation. The simplest way to keep track of time for computers is to count seconds from a certain agreed-upon point, without leaps, stretches, or arbitrary transition tables - without needless complexity. If I don't care about calendar (Earth rotation) I shouldn't care about any of that stuff either. In short, no leap seconds would mean simpler, more reliable software.