What's the point of splitpush?
So the basic concept is to be alone in a side lane pushing towers, while your team keeps the enemy team busy mid not letting them engage 4v5.
To do that you need to be a little bit ahead to 1v1 or 1v2 in case the enemy team sends someone to stop you. Seems like a pretty basic and decent strategy, huh?
However, the problem starts when they send one person to sit under a turret you're trying to take. That person has to be just a little bit tanky, and preferably have some cc, so you can't dive them. At this point the enemy team traded off a much weaker member of their team than you, while still denying you the ability to take turrets, while being able to easily win 4v4.
So again, what's the point of splitpush in higher elo where people do the mentioned above instead of dying to the splitpusher one by one?