99% of my games, "first blood tower" has absolutely nothing to do with skill.
It is luck 99% of the time. Why do I say that? Because I'm a jungle main, and usually I'll see a tower and be like: "well that one's going down no matter what, I guess I better push a different one!"
So lets say I see mid tower as a tower the enemy team is going to take. I go top (despite all the memes about 5 man ganks bot all game). I kill top laner and push top hard. Enemy jungler does the same to mid. Whoever wins the race gets the gold. The towers in 99% of games die within 1-2 seconds of each other.
If I kill a tower and get first tower gold, and then another tower on my team falls 1-2 seconds later... Is that really skill? Seems like luck to me. AND THIS IS HOW IT ALWAYS HAPPENS.