Yeah it doesn't sound right that they would let the boy sandbag like that. Sandbaggers will eventually meet their maker. They'll end up being short timers anyway or they'll forever be sandbagging and never go up a division. I find their logic amusing.
On the flipside, Cora could have taken it as an opportunity to see how well her defense has improved against the very person that beat her. A litmus test if sorts. Always take a win or a loss as a learning experience. Had Cora went against the boy, she would have gotten 2nd, in a loss, or 1st, in the win.
I know that most of us, if bracketed against, say Marcelo/Lavato/Mendes/Cobrinha, probably wouldn't win the match. But, we've been underdogs from day one. To have the opportunity to give it your all and possibly upset the expected victor... Yeah that would be awesome!!! Nothing to lose.