Can someone explain the benefit of using this over the (already existing and popular) reactive libraries? I've found a combination of MobX/RxJS to be a good fi

Can someone explain the benefit of using this over the (already existing and popular) reactive libraries? I've found a combination of MobX/RxJS to be a good fit for most applications that need reactive state and don't use a framework (like Vue or Svelte) that already ships with reactivity. Looking at this - it looks very similar except that it requires a global mutable variable (which I'm not a fan of, kind of like MobX state tree but without the serialization fun). Someone please sell me on this :]?