The point is peoples misunderstanding of what Satanism is needs to be addressed if one is to make a sound judgment on the case
I disagree totally, and have the suspicion you know this to not be true also

However, no one needs to understand what satanism is nor does it need to be addressed, but go ahead if it makes you feel better

The point is, people like you should be looking at the whole picture as opposed to dismissing each apparent individual behavioural problem.
I very much doubt members of the jury at trial knew much about the occult or satanism.
Luke Mitchell need not have been interested in the above at all - the things that came out of his mouth were enough for lay people to be convinced they were dealing with a 14 year old with alarming behavioural problems.