Hitting my 30 minute powerspike on Jinx

But if everyone is playing late game and you play early that gives you a huge edge if you are good at closing out games with the leads that should be much easier for you to get.

If you are playing late you need to try to diffuse enemy early aggression. Right now with the lane push changes, tower changes, baron changes, Herald changes, base stat changes, etc. There isn't an efficient way to diffuse the situation.

I'm a biased adc main who prefers late game team fights, but I think it's good if early game hyper aggressive champs like pantheon j4 bot can prey on me. It gives them their power phase and it gives me mine. If they play well they snowball and I'm useless and I lose. If I can hold them off I outscale them crazy hard. The problem is that the scales are heavily favoring anything that can get dominance early because of the recent objective changes.

I think it goes a little more deeper than that like personally I main reksai who is a strong early game champion do when the game stretches past 30 minutes a Jax should be able to beat me in a fair fight

That's just it. I'm not sure the idea of "early game champs" or "late game champs" is a good thing on the whole when it comes to relative power levels. It leads to situations where doing anything that has any influence on game duration (say, messing with turret HP or regen) has wide-ranging and hard-to-predict knock-on effects for literally every champ in the game depending on when they hit their power spikes, and leads to situations where you have significant chunks of the champion pool, at best offmeta, at worst nonviable for 98% of the player base.

Consider what would happen if there was a global balance pass on power curves. They become predictable across all classes, all champs. I'd argue this wouldn't make the game boring, because you still have the variables of team composition, itemization, macro, micro, etc. to work with.

It would also immediately surface any kit or base stat imbalances and make them stick out like a sore thumb.

This may be a bit HotS-y for people, though (in that game, the entire team levels up as one).

Your team should come out ahead. If they do not come out ahead of a low impact jungler than your team did not play around a win condition. If your team cannot play around win conditions they should lose. It's that simple. If a late game scaler cannot play safe in the early they should lose as well because they are not playing to their strength.

The difference between the two is that even in late game metas early game champs have their time frame to be most effective and set up a win. In an early game meta the same cannot be said for late game champs.

Not really, Jax and Yi are more specific problems. ADC latgame is weaker now against most champions (Not sure about bruisers/fighters/whatever because idk what the armor usually is) and Riot hasn't really done anything to make Mage lategame's stronger. For a long time, mage late game was complete garbage unless you were Veiger, because of Rabadon's cost. I'd argue Jax and Yi shouldn't even be late game champions. Neither one of them is weak or vulnerable enough in the early game to actually justify their late power. Counterstrike is too strong of an outplay in early toplane, and Yi being a jungler makes it too easy for him to just stay isolated. It's not like he has a lane opponent to punish him directly.