This is a post about unnecessary rage that absolutely noone has to deal with because everyone should use ad blockers. OP may or may not know, but the post suggests the later. I dont see how it is 'unoriginal' to comment about ad blockersin that case...
It just shows what the focus lies on. A post full of comments recommending adblockers has far more impact than a single comment making the post seem dead.
Youre technically right that it is unoriginal, but I dont see how originality would matter at all in this case.