No, you don't get to wash over that. Own your statement. You said (my emphasis)
So in acknowledging that nobody knows with certainty what/how it got through you are admitting that your previous statement that they should've picked it up before that was completely unjustified. Totally judgy and in no way an observation - which as defined would be a statement based on something that you have seen, heard, or noticed.
At best, you expressed an opinion, and your opinion was unfounded in fact.
You're making broad statements about someone else's job without the knowledge or experience to do that job. And you're wrong to boot.
Cannot agree with this more. This is exactly the primary issue at play and what anyone coming into a management role in a theme park needs to read over and over again. My time in a theme park was spent with managers that inspired us to do our best, encouraged us to push for our best to ensure we delivered our best for each and every guest.
I left because a new manager entered the space with a background in fast food, and she entirely obliterated the culture, destroyed morale and made it a not fun place to be.