You don't need Meta to Climb. (With explanation)
Now, before you downvote, hear me out:
For the point to make more sense, let's consider climbing a mountain, with the peak being whatever rank you want. Be it Silver, Diamond or even the pro scene.
Now, when most people climb a mountain, they need the essential tools. Ice picks, hiking gear, ropes, maybe a guide. We'll call this the meta of mountain climbing. (And for league's sake, this is any meta, not just the one right now.)
Most people have to use the meta to climb mountains....and there's nothing wrong with that! It's the safest way, after all, and it gives you the best chance not to fall off the mountain and break your neck. However, for some people, the meta isn't necessary at all. Most often these are the gurus of mountain climbing and the absolute sickest people. These are the guys climbing with old, possibly unsafe gear (Off-meta champs), using their most reliable gear (The one-tricks who have mastered their champs) or the absolutely fucking bonkers madmen who are climbing the mountain shirtless with forks for fingernails (That one insane fucker who always hits diamond/challenger doing weird shit).
Using that climbing gear isn't necessary. However, to climb without the gear, you have to be a god at mountain climbing....and the fact is, a lot of us aren't. And yes, there will always be a good player who uses meta to climb to massive challenger gains. We'll refer to them as the villain of the 80's sports movie who has state-of-the-art gear that is climbing the mountain to close down the ski lodge so he can build a mega-mall where you and all your friends would hang out.
Ok this metaphor is off the rails.
Anyways, point is, you don't need meta to climb. However, meta is probably the "easiest" way to climb if you're comfortable using it. Some people won't be comfortable and make up the difference with their old mains/picks they mastered inside out. Others will insist their attack-speed-on-hit-Garen will get them to the top before tripping on their shoelaces. I think it's an important distinction to know that it's totally possible to climb without meta but you have to be good. And frankly, most of us just aren't good enough to make up that skill difference. But hey, nothing wrong with that.