I don't see how the linked post bolsters your argument. In that situation the chicken keepers experienced some losses, attempted to identify the threat and made some modifications to the housing. Turns out they misidentified the predator so their modifications didn't prevent some additional losses. They took further measures and trapped and relocated the predator which would no doubt buy them some time to further fortify the housing should they choose.
Additionally they experienced previous losses of rabbits to weasels--another predator attack that they thought highly unlikely to occur to housing they thought was sufficient to protect against. The poster doesn't say whether measures were taken to prevent further losses after The first rabbits were killed, but didn't say they weren't either. Not did they state that more rabbits were purchased to be housed in the same setup with no regard to possible future loss.
Plus, since the OP is their daughter,we are getting the story second-hand and have no idea what actual measures were taken, the amount of concern felt by the owners, nor the exact timetable over which the losses occurred. It seems unfair to judge these people.
My argument? I dont have an argument in this thread let alone in that post.
That was a question.
Curious where you got that they misidentified the predator? I didnt see that part.