Riot should admit officially they have destroyed the balance they made over the years.
The new runes changed every core aspect of the game even small numbers like 0.1% damage, cdr, crit can have huge impacts on the game.
The ancient members of the balance team have spent years to balance the game around the ancient rune system.
in fact Balance and characters were adapted to => the ancient rune system
it took them around 8-9 years to balance the game around those runes...
If you create a new rune system you will not be able to predict how it will react.
in fact :
New rune system => characters behaving completely different, players behaving completely differently, a lot of unanswered questions and variables you can't predict.
Simple equation : Runes X (2008-2017) + characters = approximatively balanced Runes Y (2018) + characters =/= to approximatively balanced
Now that they see that they screwed they try to correct the things by Big changes every months. And believe it will take them more than the 8-9 years they took in the past to balance the game because there are more characters.
I would prefer they just revert runes than that those insane big changes every months...