Reddit has some good discussion on this. https://www.reddit.com/r/Kotlin/comments/7asvab/dont_use_lambdas_as_listeners_in_kotlin/

Yup, indeed! 😄

There are some dark places in documentation, but phrase "Don't use something" is not quite right

You are right. I am writing an update article following the comments and discussion on reddit, I will put your words in it, may I?

You're welcome