why is "hello".writeln considered bad?

[norm via Digitalmars-d-learn]

I was reading some posts and this was presented as a snippet of 
code and was immediately flagged as bad practice.

I get some people don't like it but occasionally I prefer this 
syntax. It feels more declarative and fluent in style. Is there a 
good technical reason why it is bad practice, e.g. does it make 
it easier to write bugs? Or is it just what people are used to?

Thanks,
norm