Someone noticed the missing "we" from "we'll". Often times it is speculated that the missing letter(s) are in the drops inside the kill brackets. So in this instance someone noticed the missing "we" and went to the drops to see if there was a "[we]" and found it.
Found another agg site:
https://operationq.pub
Thank you. That is a satisfactory explanation, which I shall accept as provisional, instead of just rejecting it.