The toxic content from other networks nodes have increased due the popularity of Fediverse networks. This increases the unwanted content on your network.
I usually tag nsf* to the posts which are toxic. It works great in Hubzilla. But in Friendica if I tag a post with NSF* the post collapse but not the comments. As the toxic post will have toxic comments too. It would be good idea to collapse the comments of the post too when a post is tagged as NSF*.
But still adding a post with the filter tag should collapse the comments too. This feature is really good as sometimes there are inappropriate pictures/images in a post and there comments have similar non text content.