This particular downvote came because he's claiming that a bs upvote ring is happening here, while he upvotes himself. I'll ignore the self upvote for now and focus on the upvote ring. Okay, he disagrees. Flag is justified. (according to you)
There are innocents here. You are wrong. Just because opinions are opinions, it doesn't make them guilty opinions. The people that have been attacked by this cat have been "collateral damage" which was stated by him! It's not that he disagreed, it's not that he felt "this doesn't belong here".
While the comparison to reddit is okay, this isn't reddit. Money is actually involved here. Also, Reddit is a cesspool of toxicity. Seems that this is what we want steemit to be.
Some poor artist sends his money to an upvote bot that he is unaware is a target of this cat. The cat proceeds to downvote this poor (or rich) artist. (Do note that losing an upvote that you paid for is an actual loss).
Now, I'm not going to get started with bidbots, because I don't particularly agree with them. (Now before you go check my wallet, yes, I paid for bidbots for 1 post, and it was merely for promotion purposes as I was welcoming a popular youtuber to the platform)
If the content is original then it shouldn't necessarily be flagged. If it is plagiarism, stolen content or abusive and/or illegal, then it should be flagged.
I am not even sure you are completely up to speed with what's going on here? He is indeed attacking posts and flagging users in the name of abuse, but not because the people he is flagging are abusing, but in an attempt to strangle the bidbots that are enabling the abuse. Instead of flagging what you say is "absolutely flaggable", he's flagging random users.
I haven't actually seen him flag real abuse. So I think we'll have to just agree to disagree.
Again, for this particular post, I kind of laughed at his reasoning for the flag. He's a bully, and since you seem to be from reddit, I assume you think bullying is okay.
If this offends you I apologize. I wish you nothing but success. Peace.