Reviews about subjective matters such as how emotionally resonant Gone Home is, as well as criticisms toward GTA5's treatment of women characters, have met with much anger from the game community. I actually think these opinionated reviews are refreshingly honest compared to the tokenly-objective reviews game sites have been peddling out for years.
Basically, if a game has beautiful graphics, performs well, has refined gameplay mechanics and lots of content, it is entitled to be at least a 7/10. The debate isn't any longer about whether the game is good or bad but rather "is it an 8 or 9?".
Zelda and Assassin Creed entries have been showered with 8's and 9's by critics because "hey, despite it's faults, it's still Zelda/Assassins' Creed". Later some of those games would age horribly and players themselves would reject them.
On many occasions, the average player and even the seasoned gamer will (honestly) think the game is either fun or "it sucks". For example, GTA IV was praised immensely by critics but many players just thought it was plain boring.
Objective game reviews don't make sense in this day and age. Back in the 80's and 90's where internet video streaming wasn't around, we needed someone to tell us how good the graphics are and how good the sound is because we couldn't just Youtube it. Another fact is that quality control has improved.
Most mainstream games aren't that bad. In the 90's there was a lot of shovelware, but nowadays, games (aside from the occasional RE6 or Duke Nukem Forever) aren't really bad as much as they are just unoriginal. There are plenty of refined games where you can shoot people or take down enemies. Now, I feel there is a need for more irreplicable aspects in gaming: a strong coherent memorable story and the like.
Metroid Prime 2 for example is very functional game that can be a lot of fun, but it mostly just consists of shooting enemies and it isn't very original or memorable. Back then, it was an excellent game for the time. It was a quality product. Today, we have loads ot quality products and simply being objectively functional isn't enough.
I don't think reviews have ever been fully objective. Lots of readers of these critic websites want enough subjectivity to know whether a game is an 8/9/10 but want enough objectivity to make sure a game can never get a negative review unless it has bad graphics/glitches/is short. Even if the gamers themselves don't like the game.