Here's a good example of ignoring preferences.

scorevoting.net/IrvIgnoreExample.html

I would disagree about Condorcet. Score voting and variants, such as STAR voting and approval voting, are vastly simpler than any ranked method, and perform better in voter satisfaction efficiency calculations, and plausibly make better Condorcet methods than real Condorcet methods.

https://www.rangevoting.org/AppCW

The biggest moral of social choice theory is: avoid ranked voting methods.