I understood exactly what you meant.
I agree that they made the right decision.
Even other zoo keepers, people who LOVE animals, who care for them, who feed them, who handle them, and who know them and how they behave, understand that using the tranquilizer gun was risky at best.
It's an unfortunate incident. That silver-back gorilla is a magnificent beast of the wild, and it's sad that it happened, but it is what it is. Hopefully, this will put all zoos on notice to ensure their enclosures are safe going forward.