Champion scaling and elo
I'm thinking a lot of the common knowledge on this is just based on how it works in high elo and doesn't really apply in lower elos.
Like one of the best examples to this for me is Nasus. People say he spikes hard in mid game and then starts falling off. I guess bc if you're in higher elo once ADC has 100% crit and LDR you're just going to get cc'd and they're going to one shot you before you can get on anyone. But that doesn't really happen in low elo because 1 the ADCs position very badly and 2 the supports and anyone else doesn't peel ever, they only engage. As a result it feels like the champ never falls off and just infinite scales.
An opposite example of this is ranged champs that are supposed to scale well. Like Vayne or Kayle are two big ones. They don't seem to scale that well in low elo bc its too hard to position and play mechanically well enough in 5v5s late game when a lot of things can one shot you and a lot is going on. I see a lot of Vayne's stomping lane then being useless later bc the mechanics in teamfights are too hard.