I watched about 20-something episodes of Steven Universe about a year ago then took until summer of this year to start watching it again and to finally catch up with it, so I can understand being slow with it.
The show's currently on a hiatus but is set to return on the 17th, I believe. I'm really looking forward to that since it seems to be a special episode (of course I won't give any other details on it, because of spoilers.)
And that is the reason most people play the map specifically to fight the boss or have a little chaotic fun. Playing and finishing the round of KoTH itself is very hard to do when a boss that prevents point captures appears so often, as you've certainly experienced today.
I like the Horseless Headless Horesmann a lot more than the other two bosses. When he's around everything is just pure chaos and it doesn't come with any round stalling.