One problem is that they just don't talk, so one can only guess what their motives are.

I just noticed that also Hive account@icuz is marked.

Hive account@icuz is the brother of my wife (Hive account@kobold-djawa). He is still living in Indonesia and we try to guide him how to use HIVE properly and support him when he is writing here. That's why I grant him some high upvotes from time to time. His English is not the best (however, compared to my Indonesian language skills it's great) but he always only posts his own original content, and tries his best to do things well. So again I have not the slightest idea what the problem could be.

I also use his Splinterlands account to trade cards as so far he doesn't (and can't) play himself.