"...an OS cloned off an almost 50 year-old OS..."
In much the same way that next year's offerings from Ferrari, Porsche, Bentley & Rolls-Royce are powered by a clone of a 129 year-old power plant?**
Pure sophistry^ old lad - and you (should) know it.
**1884: British engineer Edward Butler constructed the first petrol (gasoline) internal combustion engine. Butler invented the spark plug, magneto, coil ignition and spray jet carburetor, and was the first to use the word petrol.
^Pure sophistry:- a more polite and restrained way of saying "Utter bollocks"