The reason Unity gets a bad rep is because it's so easy to use, and was free for so long, that a lot of people use it to develop their first project. And a lot of people who don't know how to program or develop games use it to make something and try to cash in on trends. It started life as an indie-focused engine, then moved on to become one of the best mobile engines, but as of Unity 5 especially, it has become a truly AAA-class game engine. Also, unlike Unreal, Unity's default settings are not for high quality AAA graphical effects - you actually have to know what the effects are, what they do, and enough about Unity to use them. I've been developing using Unity for 6 years now, I'm currently using it for VR simulations, and I can tell you, Unity is not the reason Bomberman R is running at 30fps, unless the development team was new to Unity.
Some noteable examples of Unity games:
Ori and the Blind Forest
Pillars of Eternity
Hearthstone
Cites: Skylines
Kerbal Space Program
Pokemon Go
Firewatch
The Forest
Most VR games