Not all comments are created equal.
In terms of freedom of speech they are. Giving people the ability to delete peoples posts is very dangerous ground to walk on. You DO NOT want steem to become an echo chamber breeding ground like facebook twitter and reddit. Its very bad for the political landscape.
Please read the post. This is in reference to Guest Posts (those that are not authenticated by the STEEM blockchain), which are far easier to abuse. Comments added by a STEEM user can not be deleted.
I see. Sorry about that. I kind of just got triggered like an idiot when I saw "deleting comments" aspect. Which isn't even possible on this tech.