With the game already readily available in Japan, some of NieR Automata's secrets are starting to trickle online. And it seems that the new game is as much a fan of breaking the fourth wall as its predecessor: complete the title three times and it'll allow you just buy any Trophies that you're missing with in-game cash.
To be fair, director Yoko Taro is famous for this sort of thing; the first game famously corrupted your save upon reaching one of its endings. You could look at this as some sort of industry commentary about the value of system-wide achievements, then; technically you can get the Platinum here by just backing up your save and buying each remaining trinket, defeating the point of them in the first place.
Genius? Yeah, kinda genius.