When Comments are enabled on modern pages. Can we only allow users to delete their own Comments

john john 

In both SharePoint 2010 in the past and more recently on SharePoint online, I have created a SharePoint 2010 workflow (using SharePoint Designer 2010 or 2013) using an impersonation step workflow on the comments list that I have built to immediately takes edit rights away from all other staff apart from the person who created the comment (as they may want to change or delete it). You can also build a step into the workflow to automatically email them telling them if the comment was approved or rejected if you choose to require content approval on the comments list. As far as SharePoint Designer workflows go, it's fairly easy to do. I agree that it is worrying that end users can edit or delete each others comments, as each comment inherits permissions from the comments list which needs to be set to give them all contribute rights so they can leave comments.