Every litre bike gets rave reviews, really. None are bad motorcycles, all make big power, are light, and handle well. It's only when compared to the competition that the differences become more meaningful.
I don't have any tests from 2017 when the current Gixxer thou came out, but I recall it never quite matched the S1000RR or RSV4 even then. Subsequently, BMW, Ducati, Honda, and Aprilia have all moved the game along quite a bit, leaving Suzuki, Yamaha and Kawasaki behind.
This isn't such a big deal for Yamaha (their range is more diverse) or Kawasaki (the race bikes are great and the new one might catch them up), but Suzuki was the king of the litre bike pretty much from the beginning of the GSX-R1000 in 2001 until the S1000RR appeared. If you factor in the 750cc years before that, the GSX-R line had been cutting edge for sportbikes since 1985. What they have now is almost there, but like the rest of Suzuki's lineup, not class-leading in any way. And the ABS is apparently downright dangerous on a track, which used to be where Suzuki did best...