As my colleague, Elena, has pointed out, since Sitefinity 6.2 comments are enabled for each newly created dynamic module. Here is also a short video
I have recorded for your convenience demonstrating this. Can you please drag the dynamic content widget
for your dynamic type on a page and open the details view of a dynamic content item and you should be able to see the comments widget.
You may also take a look at the following article
for more details on comments for dynamic content types.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Sitefinity CMS Ideas&Feedback Portal
and vote to affect the priority of the items