And, according to the wiki and this script, the three day trials were-

implemented about 2 or 3 years before the first game - which means they began in 2013 at the earliest

Meanwhile, I took Bratworth from 2011

soooo he wouldn't know about that yet

HOWEVER

the initial trial system is based off of the RL Japanese court system at the time the games were created

plus, it's hinted that the three day setup was the result of growing troubles in the legal system

So I wonder how different things would be for AA-verse than the RL American court system :|a The localization could only change so much

my point is that Edgeworth could still talk about how things are fucked if it comes up in conversation

there's jsut a limit on how far he can go