Its the other side of the snowball coin
bloated damage and increasing death timers as well as weaker objectives all to make it soooo much more easy to snowball out of control
however if you dont close out and lose a fight past 25 minutes you probably just lost the game
it does make for shitty gameplay either way
often times minor mistakes even if they are plenty dont matter in the face of the snowball onslaught however a big mistake later makes you autolose because of the same lame mechanics which let you snowball so stupidly hard
In past seasons this wasn't an issue
lose 2 kills or a tower before 5 minutes no big deal you can claw your way back by setting up your own plays and taking objectives though harder due to the enemy being ahead it wasn't that hard to do if you had good strategy and skill
you clawed your way back
and then you gain the upper hand by making more plays and using strategy to take extra objectives over your opponent.
They try to stall to limit your gold advantage which eventually doesn't matter.
this led to boring game play as the behind team would usually try to stall 20 minutes. riot tried to get rid of it, but they did it the wrong way
though if you lost a fight late game it wasn't auto lose they would get baron or maybe an inhib. These were kinda big advantages but not the end of the game, usually a team would need a few such wins and with each win it made the next one easier or harder to defend against due to pressure
Only the best teams were capable of closing out the game after a late game team fight win. they would grab baron and use that to end the game.
Nowadays anyone can close out the game, and if you are the adc you can singlehandedly end it if you win a late game team fight.
Honestly drake change and first blood tower was all the game needed. as one gave more agency to early game comps and drakes allowed you to gain stat advantages which could not be nullified by stalling the game. herald could use some of the same treatment and everything would have been fine.
Instead, in addition to those things Riot did a lot more
They also bloated damage heavily making snowballing champs oneshot everyone including objectives
They made death timers scale harder to give snowballing team more time to take advantage of kills during mid to lategame
They made objectives a lot weaker trough several ways, more ap damage and less hp and resists and made penetration apply to towers
They gave pushing minions to the team with an advantage, giving them even more map pressure
They removed bot tower fortification
And there is a lot of movement creep in items further cementing map pressure, the ooc movement on lethality items being the latest example