Yes, but the context of this discussion was Q:"why is Windows Defender using 2GB of ram!?!?" A:"It only does that if no other process needs the memory". Which w

Yes, but the context of this discussion was Q:"why is Windows Defender using 2GB of ram!?!?" A:"It only does that if no other process needs the memory". Which works fine only if there is only one distinguished process. My point was that there isn't one distinguished process, and that thus -- as you described -- it should be left to the OS to decide and not to Windows Defender.