Well no, judges do not have common sense. They are either extremely obtuse or corrupt. Worst case, they will make up their mind early on and refuse to budge.
Sometimes they are too old to even comprehend the technology.
Judges are always on the side of law enforcement, and whomever can purchase the more reputable legal firm. Judges have favorites, and biases.
Laws like this will immediately backfire. It won't hurt politicians initially. They get immunity. But it will allow the party in charge to cement their position through illicit use of encryption.
No encryption allowed for the opposing party! But us...
Extremely late edit : I would also point out that "random people" are easier to arrest than actual career criminals. Police here are extremely lazy and usually only go for the low hanging fruit. Some of these cases do get thrown out. But not all of them.