As a reviewer, I definitely don't dole out bad or mediocre scores to be 'edgy'. The lowest score I've ever given out was for Dead Rising 4, and that was because the game literally broke on me about halfway through.
Having a great variety of people to review games is a good thing, not bad. It creates varying perspectives. Maybe reviewers should start stating their history with the game, series and genre before the review, so people know what angle a review coming from.
Being too excited for a game isn't neccessarily a good thing as a reviewer, either. I'm anxiously awaiting my Andromeda review code, but I also realize that my excitement has the chance to greatly color my review. The ability to play everything before anyone else does help in that regard, though: I had an amazing time reviewing Halo 5 and rated its campaign highly, before the game came out and everyone started shitting on it. This is from the perspective of a hard-core Halo fan, too: my editors asked me to rewrite my original text because I was getting too deep into the Halo lore at some points. :lol
Lastly, yes, we often get assigned games we know we probably won't like, or just generally don't care for. That's not because the higher-ups want to generate clicks, at least not in my experience. It's often because everyone else is already busy reviewing other games. It's our job to take these games seriously nonetheless: that's what makes it a job, not a hobby. I didn't particularly care for For Honor, but went in with an open mind regardless when I reviewed it.
So, like ThoseDeafMutes said, having some variance within reviews is a good thing.