Is it possible to mark comments as spam, aggressive or offensive; in the same way that posts can be?
There's one I've just noticed that is a good candidate simply by the use of language ie words generally understood to be offensive.
If you hover the comment, you see on the left a triangle for upvoting and a flag for flagging.
This is not possible. In most mobile browsers you can however tick a checkbox 'request desktop version', and then you can do like in the desktop version.
First tap the comment. Then, in the top menu there is an option 'flag'.
If you press the comment you get a series of options bellow. On the left is the upvote button, but in the middle there is a flag option. Press this flag, and the options for flagging come.