@haejin is the most peaceful, kind and generous person on Steemit. He has helped hundreds, if not thousands of people and given out life changing knowledge for free. He never engaged in any conflict or argument with anyone, but was viciously attacked with no provocation simply for being successful and popular, and helping people.
If that happens to you, who will help you?
Does he need help? If that was me I'd ignore them as he has been doing. I don't see the reason to turn this into Steem WWI
Good luck, you're going to need it.