I'm fairly new to this and am wondering from what I've read about the purpose of kielesol if it's really necessary if the wine if already clear. Is it essential or does it do something else? I'm trying to learn as much as I can.
No fining is truly needed.
Time will drop all those particles you just have to wait. Some times a pretty long time but it will all fall out on it's own. If you do not want to bulk age your wines for 6+ months finings will hurry it along.
There are exceptions like starch or pectin hazes which will not fall clear on their own.