What Critical strike was even supposed to do?

I mean... I was pretty sure that its a nice way to increase your DPS. With its randomness it can turn tides possible instakilling some unfortunate squishy. But not that great vs tanks cuz they have lots of armor and capable of sparing slots for so armor pen would be really good to have versus them. So to maximize your damage you had to balance out and mb squeeze in some AS, AD, and mb some purely defensive slots like old GA. Those days everything gives dmg. Even freaking GA. No matter what you do you will get over 300AD, extremely close to 2.0 AS and it seems crit based ADCs are entitled to 100% crit chance. It isnt your choice but something you will get without even having to compromise. OKAY. And it looks like crit now is also supposed to deal true damage... WHY? What is it even supposed to do? Kill tanks? Kill squishes? Kill EVERYTHING? Why you had % armor pen then? Whats the point of merging those 2 things together?

I guess RIOT thinks its too hard for player to choose one build from one and a half. No matter whats going on you just build this and be done with it.

Crit kinda turned into weird ADC power level thing. "What is his crit level? Its OVER 90 0/0!!! Shit we are fucked... Our adc only has 50%" If you dont have 100% just keep building. You aint done. And it cannot go wrong cuz it works on everyone no matter what.