I mean anyone can make those basic calls, and at that point I would just call it good comms, there's not really a point in having an actual IGL in lower elo. Ofc having good comms will make a great impact, but IGLing doesn't add anything special really unless your team can actually follow up on it well. And even then, most IGLs in low elo I used to see were pretty dogshit, the most important thing as an IGL is to keep morale up, but most people don't know how to, and probably anyways the best strat in gold is to just send it down or fake and rotate, or just push mid, which doesn't really need an IGL.