Because it ruins the narrative. It's the same reason that one side of the political spectrum was calling the shooting an effort to stifle (specifically) Christ

Because it ruins the narrative. It's the same reason that one side of the political spectrum was calling the shooting an effort to stifle (specifically) Christian religious freedom, even after photos were published showing the guy wearing patches that are directly related to racist organizations. The kid is a disturbed racist whackjob who was given a weapon. He used it to terrorize people, including murdering or injuring many. He's a terrorist.