Whenever [specially the electron] people talk about "unused ram is wasted ram"

It's already the OS's job to manage system ram, not your program

Stop assuming your program is the only thing running, yes the machine has 16GB of ram, which should let it run many more programs at once, not two or three bloated program

If you are going to use resources, it has to be for something useful like actually intensive work, not just for backing your badly made framework that is idling most of the time