Your level-headed approach to this case is seriously refreshing. Many people flatly refuse to admit that Shannon is, logically speaking, more likely to be the suspect based on all available information released through official channels (SAPOL).
Given that SAPOL have gone on to publicly discredit the narrative that was originally released of the day that Gus went without specifying how, and in response to further questioning expressed some uncertainty that that was even the day he disappeared, I believe this is an overstatement. Logic only works when based on good data, known truths. 'J and JM were out working about 10km away on the station all day while SM watched GL and RL at the homestead, last saw GL plopped on a pile of sand playing at 5:00 pm, checked on him at 5:30 pm and he was nowhere to be found, family searched for 3 hours, found nothing, and called police' isn't to be considered fact at this point, per SAPOL. Basically, we
know that police were called 27th of September, at approximately 8:30 pm, were able to get there some time later, and searched for a reported missing child. That's our official narrative, the rest is suspect. And we have the documentation of the search/investigation from there.
What I consider to be relevant facts of the case at this point are the snippets of information we have regarding how they've proceeded in their interactions with the grandparents in the aftermath of declaring it a major crime, and how the grandparents have reportedly responded. From what we've been officially told most recently, we simply don't have enough to come to a logical conclusion of who is the suspect beyond that it's either JM or SM, as an Oak Park Station resident who isn't one of Gus's parents. But there's a lot of information to interpret. Personally, I've been focused on trying to puzzle out who was considered to be being 'cooperative' and 'non-cooperative,' as that was the distinction made by SAPOL between the non-suspect and suspect, respectively, before the time when the second grandparent reportedly stopped cooperating.
Meanwhile the accusation of being mindlessly manipulated by the media or a bigot if we don't agree with your assessment of this case in which so few things are
genuinely known for certain, including what you're basing your personal theory on, is just tiresome.