leavebuster

I understand the need to inforce rule and punish wrong doers but as a player how plays fill in ranked so support I find it funny that after my computer crashes and I dc and get back in to the game 10 min have passed but what does my team do blame me for the loss I mean yes its hard to win team fights 4v5 but I was support I didn't feed the adc all my adc had to do was play passave I didn't leave a lane open for the junger to have to fill yes support is very important to wining a game but has the least affect on a game if they dc for a short time so will some one in riot game pls exsplane to me how after no previous bad behovor I get leave busters for laving a game for 10 min