Also seems like a terrible strategy for Finn. Would have been better to fake mental illness, or wait for leave to desert. Even while on a mission on some planet. Deciding to bust into the detention block to rescue someone he’s never met before and then blast his way out of said detention center? Just dumb.
Just stuff like this could have and should have all been cut from the movie. The script is not a good one, or at least its uneven. There were plenty of good things to like in this movie, but the stuff before we met Rey is not among them.
Finn postponing his desertion for shore-leave isn’t exactly the best basis for an exiting movie.