John Mueller from Google had posted that there is no need to worry about links and the links should be done naturally. People started complaining about the nofollow link attribute and the reason for Google to have it at all. John Mueller replied that it aids some of the publishers to focus on building content, without any worry about other aspects.
John wants to say that this way the publishers get more time to keep their focus on writing that is beneficial to the readers. There are many website owners who have to spend time on making sure that the comments on the site are clean. This takes away time from their writing. At least the nofollow feature will give some peace of mind to the publishers to not have to waste time on spams. They can instead concentrate on writing.