I find the drive to the lounge when I arrive from AMS for an F connection to be some added value. But I agree that in the end it's still a lounge, although a good one.
And sometimes the extra time spend there is nice when I'm off for a holiday and don't care to leave a few hours early and then have lunch in the FCT before the flight. But since food in F is also not that bad, no real need to spend much time in the lounge...