A bunch of punishment was distributed by Blizzard recently on the Overwatch League, this, coupled with the move from having their channel being moderated by a in-house team instead of community volunteers make the writing clear. Overwatch League is to be as safe and friendly as it can be. We are talking about Disney safe here.
Personally, I'm not fond of this style of heavy moderation. I'm not saying it's WRONG or Blizzard should not do it, but I, *personally* don't enjoy it. Yes, I much prefer people spamming racist memes (and being banned few seconds later) than having the place looking like a church meeting.
Overwatch League is like trying to have a cool party with your parents on the room. It may work for some but not for me.
Still, some people out there find unacceptable someone being rude on the internet and those will find the League a good place to watch Overwatch.