You are so right, it seems that many who joined steemit lately don't care about content but just want to make a few easy cents by commenting. On top of that, as you mentioned, most don't even bother to get at least a glimpse of an idea what the post is about and comment unrelated stuff.
No up-vote required friend, just wanted to share that I am 100% with you on this.
Right, they don't even know what they are commenting on because they seem to pay so little attention.