Only it isn’t anywhere near as simple as the scenario you’ve put across. But sure I guess if you want to just say ‘calling them out is the most correct thing’. I can agree with that.
The problem comes in when the child molesterer is your bosses best bud and there are no other jobs around. Your boss doesn’t want grief with his friend (this is wrong but out of your control) and you need to feed your own family.
Calling this guy out then risks your family starving to death.
If you can however say that this guy’s shoes are going to rip up your carpet so you don’t want him over then hey presto! Everyone knows the real reason you didn’t invite him and you get to feed your family.
It’s great to compare things to another situation to try and find the 'ideal", but in a world where there are many different parties at play it’s difficult to find a scenario which actually compares.