I don't know about these claims — just because most OS research is now 20+ years old doesn't mean that a result, process isolation, is antiquated. You likely use a very modern operating system with process time-sharing (1964) using virtual memory (1950s/1960s) and so many other results of OS research from 30+ years ago…
This is how science works: research suggests some result; until other research suggests a different result, the first result is our best working hypothesis. Process isolation is hardly antiquated.
This is how science works: research suggests some result; until other research suggests a different result, the first result is our best working hypothesis. Process isolation is hardly antiquated.