She didn't place at the Olympics but it's worth noting she was the oldest competitor by far, and this after she had cleaned up gold medals in numerous international competitions despite having a relatively thin background in the sport. She was expected to podium at the Olympics and it's not really clear why she performed so poorly (the only athlete in the division to DNF).

Mrs Hubbard's background, if you read it honestly, is great evidence for why this decision was the correct one.

Indeed. Hubbard's trajectory in female weightlifting is entirely unprecedented: re-entering the sport after a fifteen year break, with a stronger performance than those of elite female weightlifters with decades of competitive careers behind them and who had won Olympic medals.

The only reason why this was possible is because Hubbard is male.