Comparing a web library to game engine is a bit of a stretch.
Unity is very nice to develop actually. It's a lot more simple than UE4 for example, but UE4 is much better suited for more complicated games, but then again, Subnautica is made in Unity, so Unity is very flexible.
Neither is "bad" or "worse". Unity is obviously not perfect, but video game engines move and change all the time, that is the nature of the video game industry.
Unity is mostly used for mobile video games, to which UE4 is not that much suited because it's more complicated and requires a better phone + the apk size will be larger in the end.
Unity is very nice to develop actually. It's a lot more simple than UE4 for example, but UE4 is much better suited for more complicated games, but then again, Subnautica is made in Unity, so Unity is very flexible.
Neither is "bad" or "worse". Unity is obviously not perfect, but video game engines move and change all the time, that is the nature of the video game industry.
Unity is mostly used for mobile video games, to which UE4 is not that much suited because it's more complicated and requires a better phone + the apk size will be larger in the end.