It really depends on the smurf. I started playing in December and most of the smurfs I've played with from level 1-10 were certainly better than the new people but didn't rage and act like a tool about the fact that most players were learning everything from the champion they picked to the metagame.
There were of course exceptions to this but they're easy enough to ignore.
Some were even helpful, offering item build suggestions, taking a leadership role on the team and giving some guidance to the overall game.
However I'm finding the mid-teens to low 20s is filled with raging smurfs and are far less enjoyable to play with. Sure, I have 100+ games under my belt and I've watched more than a few pro streams but I'm hardly an expert at every facet of the game and the raging smurfs that expect 1800+ elo performance out of everyone in their teens playing normal blind pick are just lunatics.