yeah but most of those guys are just getting nerfs and get ballanced (more or less like anything else)
while champions of CertainlyT are a diferent case
they are made out of quite complete and well synergizing kits that contain loads of tools basicaly for everything a champion can do, which translates to tonns of power that is not tied to any numbers
thresh is the example here, CertainlyT made sure that his kit allows for
A)supporting
B)Tanking
C)Actualy dealing damage aka being a carry
the only thing that gates his damage and tankyness are numbers, but nothing can gate his utility besides a rework on his skills, so riot is in a weird spot where nerfing him might make that entire load of strenght his skills have get obsolete, while not nerfing him leaves him dominant
and thats the case with like every of his champions
they get shitty stats becuase their kits are insanely owerloaded with raw power of everything he could think of, and that does not fix even one of their ballance problems, they are either underwhelming or owerwhelming
and their ballance can even vary from game to game in cases like darius and kalista
put kalista vs someone with realy good point and click abilities and she is the worst adc you ever saw
put kalista vs meele opponents or champions relying on skillshots and she is a god tier adc
put darius vs a meele who cant just disengage, he stomps hard and turns out to amass loads of sheer power fast
put him vs something that kites or that he cant catch, he is up since he can only compete by flashing into enemy adc
put yasuo vs someone who will bully him early, he wont get a game, he is too reliant on items
put yasuo on a lane he can do good in or even score a kill, he starts doing his job and tornadoes fly around
and those interactions go beyond simple counterpicks, since it doesnt just decide their lane, but preety much their game
so to be short and quite easy to understand
CertainlyT creates kits that amplify the power of numbers said champions has to the insane extent, which means that their ballance gets realy explosive on insanely many levels
easy example : yasuo
loads of nerfs, on his q on his ult on his windwall on his shield on his dash and nothing, he still dominates the field
then one nerf to his hp and the tide turns, yasuo is unable to even get one good game
a small buff to his hp, and he either explodes in game or just fails (current state)
owerall nerfs used : tonns of
problems solwed: i assume 0, some things changed but the ballance problems are still there
and riot realy just removed big part of his kit without even hindering his ballance