This sounds awful for everyone involved. No breaking APIs ever. How many man hours have been wasted supporting platforms that are dead for 20 years. Look at C++

This sounds awful for everyone involved. No breaking APIs ever. How many man hours have been wasted supporting platforms that are dead for 20 years. Look at C++'s modules - they've taken 15 years to get to where we are now - they're still not usable because we're hamstrung by not ever breaking compatibility.