Most PC Judges won't require that level of detail, Mindhunter, I think that isn't a fair representation. If they're not being bribed, have a vendetta, or any other secondary reasons, they will require some tangible information. Because PC Judges are trained to do their best to create RP for others and also not smallworld.
If you come to a Judge, PC or NPC, and tell them person A must have killed you because they used weapon B and wore poncho/hoodie Y, that isn't going to get any type of immediate Judgment. You will get told that there's far more people using weapon B and using poncho/hoodie Y in the city that you're implying. They will note down that weapon B was used and collect the smaller details, hiring people in most cases to gather more data for them while they question others. They'll note and remember you suspected person A, but they'll also include others and put people on it to investigate around person A and those others to bring back more data. But that's far more realistic to expect from a PC Judge than an NPC Judge. Although the latter can and does happen.
None of this will have anything to do about protecting combat archetypes, it's a measure done as a layer of protection for any and all type of crimes. There's also corporate politics in play, personal relationships and politics in play, bribery, hatreds, kinder Judgers, harsher Judges. Judges that follow the Law to a T, others who don't. Lazy Judges, hardworking Judges.