I've come to the conclusion that crit is hurting the game more than helping
Zed with 80 AD auto attacks and deals 80 damage
Zed with 80 AD and crit auto attacks and deals 160 damage
Zed with 80 AD with infinity edge and crit deals 200 damage
The problem isn't infinity edge it's crit in general. You don't even need alot of AD for crits to be effective
(I used zed as an example because adc mains are jerks and would defend crit like their life depended on it)