Controversial opinion? You're 100% responsible for all kills your lane opponent gets during laning
Just my thought.
It doesn't matter if you pinged a missing (although most of the time you didn't, or you just pinged missing and gave no indication of which way he was going [looking at you mid laners]). It doesn't matter if you were dead from a gank.
If your lane opponent gets a kill during laning phase, it's your responsibility. If they had time to roam, it means you didn't have enough pressure on them.
Just getting so tired of the guy whining that his lane opponent got fed off another lane. What did you get when he was out of lane? You have no turret damage, you're down 15 cs, you're not in a hard counter matchup. If someone roams unpunished, it means you lost lane. It doesn't matter who died, it's still your responsibility.
Which doesn't mean it isn't the dead guy's responsibility too. He died, something obviously went wrong. Thing is, don't you dare blame him for it. If your lane opponent roamed and you got nothing in return, you're the one who lost lane. Not the guy who's up 20cs and got the first turret despite having your laner in his lane more than yours.
Rant over... for now.