Should one inquire in detail, of the 'civil comments' directive and reach, you would already be in position to have any question of your anonymity. They have stated a certain degree of tracking by 'civil comments' that is separate from those  in place by ADN web site and hosting ISP. 

If you want to post, click to agree the comment is 'sorta OK'  -- then if 'civil' click the Green one after -- almost anything  may be 'sorta.

Check the new-improved 'civil comments' billboard; the rules are slightly changed.

https://www.civilcomments.com/user-guide

Even if you were to use TOR, your identity could be sleuth'd out by semi-experts...! ;)