Uh... this happens for literally dozens of players every day, they just often lose and a loss after playing an unfair game is nothing to post on the forums I guess.
a) What is this Kindred supposed to do? The Leaverbuster is strict after several minutes you get penalties (I call it the toilet timer) if you don't deal damage. So they (Kindred) have to do something anyways.
b) 40% less man power for 10 minutes... One lane is severaly "understaffed". If you still win this, the leavers might be notorious leavers/disconnecters and RIOT considers their leaverbuster score in their matchmaking (lowering by hundred of MMR).
c) If they pick 2 tanks for the bottom lane.......I would also win this.
d) Before the 20-minute mark, of course Kindred can not vote for surrender. After the 20-minute mark, Kindred either figured out you can win or you voted NO on surrender, both is nothing to go "Yeeeaahhh" about actually. If a random 40% manpower is gone, I will not struggle further. In real life there are referees for this, RIOT fails to implement such stuff in their 8 years..
TL;DR: This thread is BS and not necessary for all the amounts of games I am being held hostage by my trashbobs.