[BBallcoach]

There are so many unrealistic things going on with how they've implemented the flop shot here.
- You cannot hit one from 40 yards out.
BS: I've hit plenty of flop shots around 40 yards out. 40 yards is about the max a flop will go.

- You definitely can't hit one with a PW (unless you had a PW shaped like a wedge rather than matching to your iron set...and then you'd need to shave off all of the bounce).
Very true... 56-64 degree wedges for the flop

- You can't hit a flop shot while decelerating the club into impact.
Also true
- You can't hit a flop shot from the rough with the ball sitting up because the club will go straight under the ball. If the ball is sitting down in the rough, then it will come out without much spin because of grass on the club face.
Completely false. Now it's not going more than 15 yards but you can most certainly flop one out of the rough sitting up.

- You can't hit one off a downhill lie and expect it to bounce and stop.
You are going to do nothing but skull that.

What they have here are a lot of pitch shots where one might open up the club face on a SW/LW but they are far from being a flop shot similar to the swing motion that the player is using.
You make some good points, it's not a true flop shot, but compared to any other golf game, it can't really be abused.