Re: It's simple
Basically that an escrow system is open to abuse by a future untrustworthy government agency - and real criminals would avoid it anyway.
For some values of "real criminals." Yeah, if you're plotting a diamond robbery you avoid the escrowed crypto. OTOH, if you're planning on mass blackmail using people's secure messages to gain info, you attack the escrow key store. That escrow key store is going to be attacked by blackmailers, foreign gov'ts, employees with a grudge, etc. Anybody who thinks it will survive those attacks should remember where WannaCry originated.