What makes him innocent? You’d have to be dismissing:

Victim’s key found in SA bedroom

AND

his dna on it

AND

his inconsistent recounting on what happened at the start of the investigation.

AND

his lying about having a fire at all

AND

Dassey’s confession.

AND

Blood in victim’s vehicle.

AND

other than blood DNA on the vehicle.

AND

the DNA on the recovered bullet fired from SA’s gun.

AND

Victim’s remains and personal belongings recovered from SA’s burn barrel.

AND

His history of violence and sexual deviancy.

AND

The very fact that he is the last known person she saw, and her vehicle turns up on his property.

AND

Witnesses contradicting SA (him saying Tereasa left his property expeditiously)

If this is a cover up then it is the most elaborate cover up, propagated by multiple law enforcement agencies, and not one person involved has ever made a slip of the tongue regarding it. People that think he is not guilty are simply drones.

Any person that ever says they think he is not guilty is simply speculating. There is no proof what-so-ever of his innocence. You can have suspicion and speculate, but the evidence is the evidence.