Let me just stop you from going further and just focus on your assertion that any case should not be deemed as irrefutable.
I used the Parkland massacre as an example to highlight a case that by all intent, should be irrefutable. There are hundreds of eye-witnesses, all of which will basically describe the same story. There are video cameras placed around the school and from on-duty police officers, which will provide evidence to collaborate the same story. Plus, the shooter was caught with the murder weapon. Forensic evidence will place the bullets gathered from the victims to the gun involved. Not to mention gun powder residue from the perpetrator to the gun both collaborating the same story. Uhm, do you really want to continue to suggest that a case like this should be deemed non-irrefutable?
If you want to suggest a dangerous precedent, then consider what your logic would entail in suggesting that we cannot convict criminals irrefutably to the crimes they have done. That would hurt society by not removing the same individuals from public. Thus also not providing closure to the friends and families of the victims, not to mention the surround communities.
I just want to focus on this one subject, so please do not jump to any further subjects. Do you still believe that all cases would be deemed non irrefutable?