Well, I can see what both of you mean.
How do you define fun?
See, if you enjoy feeling your car sliding slightly ouside the corner in oversteer and then, just a little bit of countersteer with the steering wheel to put it back in place, yes to some people that's fun I agree.
But like Chirstian said it's dangerous on the open road.
But it is definitly not the solution to make a good time on the track.
But sometimes, it helps "placing" the car in a turn just by "kicking " its butt gently (hence sliding) you can see all the rally cars do this on hairpins turns, and on ice racing too.
But on the dry track (Do F1 slide? nope...)
So in the end, it depends on what people consider to be fun.
I have a C4: going through a corner without lifting my right foot and feeling the car fighting against the laws of physics, fun? YES!!!!!!!!!!!!
Accelerating earlier than anyone else at the exit of a corner, fun? YES!!!!!!
It all depends on the driver really which is why Porsche proposes both, man they're smart
Fanch.