Like I have tried IGLing in local tournaments and its insanely fucking hard. Especially during mid round calls where literally 75 percent of the time your eyes are actually on the minimap rather than the centre of the screen. You have to make sure ur teammates are in ideal positions, making sure no one looses their cool, moreover personally on my team, we arent that experienced so we ended up relying entirely on my own calls. I had to call what fights to take, and even individual microdecisions I had to call. Try to IGL one game without loosing ur mind or at least in ranked and you will actually gain an insane amount respect for IGLs playing at such high level against the best players.
edit: I have just realised that this comment where I was being serious means nothing as it will instantaneously be turned into a shitty copypasta ;-;