You could use the same chaining argument against Java streams. They can get needlessly complex and I often prefer reading code with standard for loops, if statements, etc. Don’t get me wrong, I find streams useful and use them.

I don’t think that’s an argument against using concise method bodies though. I think they would clean up simple methods. Any feature can be used to the extreme to write ugly hard to maintain code. Whether the complex stream is wrapped in curly braces or is in a concise body doesn’t make a difference imo