It’s probably all based on what your background and experience is. I love setting up unreal scenes and then looking at it from all angles. I find that much more rewarding than a super realistic static picture. I love exploring the space and I think the architecture world could benefit from exploring the space more than having photorealistic static images.
However most archviz artists come from the vray pipeline background and to make a good unreal scene requires a different skill and probably also a different mind set. In unreal everything is a compromise between quality and performance. Also quantity doesn’t mean as much quality as in vray renders. I can make a chair with 1000 verts that looks better than a 20.000 verts turbo smoothed 3dsmax asset.
It is a very different pipeline and the architecture world has just started using it. Long way to go for most. But it’s worth it and eventually real time will win in my opinion.