In regard to the post being replied to, what is 'CHR'?
In BC's own (quoted) words, he seems to indicate that he meant literally:
"The missing boy’s father Brendan Collins gave a powerful message to his son when he spoke to The Daily Telegraphtoday.
“I’ve been out looking for you with a shovel digging in bushland … I know there’s no point,” he told the newspaper."
Toy found in search for William
If BC was digging, who is to automatically assume that it is because he had a hand in WT's demise, rather than that he may be actually trying to find his own son? For what purpose would he kill his own child, one of four? Doesn't make sense, and not sure if his history of being a criminal in and out of jail and involved in drugs taints peoples' perspectives on him to think that therefore he must also be capable of doing something like this? Note: Not referring to you butterstick.