Completely incorrect. Of course there's variance but third-party coolers usually offer far better cooling than the reference design, with comparable noise and lower temps across the board.
The 1080 FE cooler design is very quiet and exhausts outside your case. Those are the advantages. It doesn't offer great performance compared to third-parties, and is very expensive to boot. The 1070 FE cooler delivers substantially inferior temps, lacking the vapor chamber cooling design in the 1080 FE, and is also overpriced.
Now there is an argument that 3rd party 1070s and 1080s don't really get higher clocks than the FEs so the better coolers don't much matter, and that's completely true. If the FE versions were priced competitively to common third-party versions they would be interesting options. But they aren't, they're vastly overpriced. That's why the only compelling reason to buy a FE today is if you have a small case with poor air circulation.