- When has this been? Oh, that's right, twice this season. Yes I will gladly have them wipe away those two wins to remove 25 losses. I think that's a fair trade.
I don't particularly feel like going over your ~350 Ranked games from this season, but I looked at your last 20 and there were exactly two AFKs -- unluckily both on your team. This is about in line with Riot's statistics. They have said that on average players have a connectivity issue in one out of every 50-100 matches played. So you should expect to see one AFK (on either team) every 10-20 SR matches played.
If you've seen 27 AFKs in ~350 matches, that's actually a relatively low rate of AFKs overall, but it would be quite unlucky to have them be so lopsided. In fact, if you figure a 50% chance of the AFK being on either team there's only a ~0.00001% chance of that happening, which makes me think you're making that number up.
In the long run, if you AFK/DC at a below-average rate, AFKs benefit you -- you'll win more than you lose due to them. It sucks in the short term if you get unlucky with them, but they don't really affect the validity of the Ranked ladder. If it were up to me I'd drastically cut the MMR and LP gains/losses in matches where someone was absent for, say, 8m or more out of the first 10m (except for the leaver, who would take a regular loss), and also allow an early surrender. Riot has said they are looking at some other approaches, such as letting you pause or restart a match if someone DCs at the loading screen.
- Something needs to happen. Apparently they are not banning people like they should. If people can't connect to the games leaverbuster should be catching them and banning them from ranked and its not.
They do ban people, and you get low priority queue and then bans very quickly from LeaverBuster strikes in Ranked matches. People whine about it constantly on the boards.
The thing is, it's not the same people doing it all the time. That 1-2% of connection issues is mostly random one-off technical issues -- a power outage, a hiccup with someone's ISP, their computer crashed, that sort of thing. It's not possible for Riot to psychically predict when these will happen, and if you ban anyone who ever has a DC you won't have anyone left.