Also, fixing the law takes years. Injecting your ear hole with a hearing device takes a few seconds.
It might be worked around, but so can almost anything.
Sleep data, etc would need to come from a certified device with possible calibration, just as people get out of traffic tickets by uncalibrated radar equipment by police. Also, just about all commercially available devices to track sleep aren't 100% accurate. GPS isn't 100% accurate and can be spoofed externally, etc.
You'd also have to prove beyond reasonable doubt that the voice wasn't AI generated, that it's your voice and so on and so on.
If one has to be this paranoid, it's likely the amount of pinholes and effort you'd have to jump through for the data to be accepted in court at all is gonna be a real pain.
If you are a defendant in criminal court, you don't need to prove anything. Just to raise doubt and poke holes on any unjust accusation. Innocent until proven guilty implies the accusation are the ones that have to worry about being able to prove something beyond reasonable doubt, ideally.
And sadly, no. False child abuse allegations have a 50%+ incarceration rate and nearly the same suicide rate. If anything goes in front of a jury, depend on your life basically being over. Lookup how Google's CSAM detection ruined a family's life for a year due to sending photos to their tele doctor during the pandemic.
I been through a case of my own during a divorce.. luckily mine was so absurd it was immediately dismissed from court and other party was held in contempt..
I had my google maps tracks history printed out, photos, conversations, etc. I did this exact thing. Maybe it helped.. not sure. I often dreamed of using a camera that took a photo every second and uploaded it, every day, forever.
Trying to put cameras everywhere in the home would lead to very expensive data storage as it would need to be stored forever. You also may be questioned about putting a camera in a bedroom or other area and such accusation could occur in an area where you can't, and don't want a camera, such as a bathroom. Cameras would need to be hidden for this tactical advantage as you are relying on disproving a specific lie. Otherwise, one was groped for 0.5 seconds in a car, in public, etc.
The long term solution was to simply no longer be a parent. It's sad, but the liability is too great.
Defendant: here I said "Yes".
Plaintiff: that's when I asked "did you do the illegal thing?"
At least this idea can help normalize public opinion to: it would better for us, the public, if we could record our interactions. Big brother is already doing it LEGALLY for quality purposes.