TL;DR we should add rel="nofollow" to the external links in article and comment for SEO benefit.
Plus, that’s only one reason that nofollow links are so important. Increased traffic, SEO, influencer marketing, and the domino effect are all reasons that nofollow links are well worth your time and budget.
Lots of people have told you different, that nofollow links are worthless.
Fortunately, those people are wrong.
Sure, they might not build you quite as much SEO juice as their dofollow counterparts, but they still drive traffic and build your SEO.