I never said lol is bad. I said I prefer dota due to the reasons I briefly mentioned. Also, for online games you cannot not talk about admin teams since the game itself is constantly changing and user input is important - having an active admin team is much better than one that doesn't really take criticism at all.
Before, the riot team was good - active on forums and didn't actively try to hate on dota (which if you go over their archived threads you will see they did do - though this is 2013 era, so not sure if the forums themselves have changed etc). Mind you, before this riot actually worked with dota-allstars to promote dota (2009ish I think). When pendragon went ahead and closed down the largest dota community and brought up lol instead (a game riot began working on), that's when shit hit the ceiling.
Not once have I heard Valve or the dota team criticize lol. On the other hand riot team used to pretty much every day hate on dota, and how lol is better and how dota stole blizzard content etc. It gets old very fast when the admin team themselves do the trash-talking. So yes, admin teams in online games is an important part.