That absolute claim is simply not true. That's like saying that people need to avoid shared mutability in every program, which simply doesn't make sense for a l

That absolute claim is simply not true. That's like saying that people need to avoid shared mutability in every program, which simply doesn't make sense for a lot of programs, especially if you have a garbage collector already. It's only a useful tool that has some nice qualities in some settings. It's not some underlying truth of the cosmos, it's just a situationally useful way to do things.