@zeroxjac You can have opinions all you want. I like Unoki a lot as far as bullying victims go, and I wouldn't begrudge anyone for hating him despite that.
Declaring "this arc is shit, just finish already" every single chapter the entire way isn't voicing opinion. It's just bumming out anyone who doesn't think exactly like you do, and probably a few who do.
Just because the pace is slow doesn't mean you can't bring new conversation to the table, and repeating the same negative mantra just makes it worse for everybody.
As for "controversial"...yeah, I just didn't know the right catch-all word for it. Not just this manga, there are plenty of others where some people very vocally hate an arc.