I wish there would have been some sort of option of giving dislike (-ve merit) to the spam/LQ posts and if any post receives certain -ve merits/dislikes,it should be automatically deleted /hidden
That is not a good idea in my opinion. Basically i agree on why did theymos didn't add the demerit function. We have a report to moderator option that we could use if we ever saw someone trying to post a garbage. Deleting someones post is basically the job of the mods. Allowing users to delete posts without due process will be so unethical tho. Will you allow someone to discredit your post without having a due process? Obviously not
Demerit system will backfire imo.
Let me give you a similar example
I have been on steemit for pretty good time and what I see there is people "flag" other users just because they disagree with them or for personal reasons.