If you're talking about the soft product I can't comment as I haven’t flown LY F in a very long time, but if it's the hard product you're referring to then I totally agree with economyman on this.

I just tried the F seats this afternoon as they opened F for C seating and although I knew it wasn't comparable even before trying it I was actually surprised at how dated it is considering it's such a new seat.

It is just not comparable in any way shape or form to any F I have flown, and I wouldn’t even rate it that much if it were a C product to be very honest.