Fe likes political correctness as a tool, not in and of itself.
Fe being PC is more like the local news networks avoiding anything that could be thought of as offensive, such as calling a criminal they're reporting 'ethnic' even though they really mean that the guy's black.
These Fi types think of political correctness as not a tool but as 'the right thing to do'. Pretty much, if the Fe types screw up when it comes to PC-ness, it's these Fi-types who complain. Otherwise, the Fe types could care less about political correctness.