Not my problem.
All I know is that you aren't there to assist the team, your reasons are irrelevant and, to be honest, how am I to know that what you're telling me is true? "My internet cut out", maybe you're trolling. So, I report for AFK when this happens, if you consistently do it then you will get punished, if you do not then you won't.
I was in a game a few weeks ago in which I was support and my adc left for a couple of minutes at a time to "change my daughter's diaper". I reported them AFK (and negative attitude because they gave the team shit about it). They said "it's a game, I'm not going to let my kid wait just to play a video game guys, get a life". My response was, "then be a responsible parent and take care of your child, don't neglect them so you can play a game online". I felt pretty gratified when I received an instant feedback report a few minutes after the game ended.
Bottom line: If you AFK, regardless of the reason, I will report you.