Shouldn't inting cover a wider variety of things done wrong as you get higher elo?

Season 5: Silver Season 6&7: Gold Season 8: Currently Plat.

So, I've played in all elo brackets until Plat (even in a bronze smurf), so I kinda know how each elo works. I was thinking about things done wrong in the game, sometimes intentionally and I've come to this:

Penalties should be more strict to things done wrong, as the elo gets higher. Let me explain. So, let's say you are in bronze, where most people don't know what items do, how you are supposed to play the game, summoner spells to take etc. It feels "ok" for the support to not buy supportive items. Let's say we have a Taric support in bronze. It can be tolerated for the Taric not to buy Redemption, or Locket, which are extremely strong items, and instead buy Sunfire Cape, because it's low elo. People do not know any better.

Let's kick it up a notch now. Currently in Plat elo, where people are supposed to know more things about the game. In my opinion, it shouldn't be tolerated to buy a Sunfire Cape over a Redemption, especially if you are doing bad, as a support Taric. It is done intentionally (user intentionally buys the items), and puts the entire team in a big disadvantage.

I recently played a game, where I killed my mid lane opponent and he killed me back in return. At that point, there were cannon minions of both sides and enemy minions where outnumbering mine. So, by the time we would both get back, I'd have a big minion wave to pick up, while enemy wouldn't (was frozen in middle of the lane). My jungler comes mid, clears out like 3-4 minions (even after pinged not to do that), so the lane was then pushing to my enemy. By the time we got back, my opponent was greeted into a 2 stacked minion wave, gaining a big advantage over what should essentially be mine. All that, because my jungler decided to screw my lane even after pinged otherwise.

Sure, we won't lose the game because of this (or maybe we will), but now I have to work so much harder to generate an advantage that I was working all this time to create. These "more advanced" mistakes will cost you games in higher elo, where the teams know that you just fall behind if something like this happens.

If it was a bronze player, I can justify the action, maybe the guy greeded to get the cannon minion or something. But higher up, this shouldn't be go unpunished.

Thoughts?