Why are smurfs always so hypocrite?

So, in my last bunch of games, I've met quite a few smurfs, and along with all the smurfs I met over time in normal games (not ranked), all seem to be very hypocrite.

Last encounter: Me: "Smurf much?" Him: "Well, it's not first acc" Me: "Typical, when I try to have some fun, a smurf shows up" Him: "Not my problem" our Ivern camps top Him: "Stop camping my lane, I'm not having fun here"

And most encounters with them are similar, if they stomp, they just brag how good they are and how bad we are for not being able to keep up, while if they lose they go with "this team is so bad not even a smurf can carry them, report them".

At least the last one (with whom I had the discussion above) had some morality left and when I directly called him hypocrite because he only cares about his own fun when he got that one ruined, he actually said sorry for tryharding so much in a normal against new-ish players (My friend is a new-ish player, just level 40 or so).

Like seriously, I know that when I moved to EUW for a while on a new acc to play with some friends, I wouldn't play my mains, and if I were beating an enemy laner, I would try to offer him tips on what to do next time or what he can do better, and I do something similar when playing with my friend, I don't play my main champs, just play to have fun and learn some new champs, while smurfs go bragging how they beat new players. Had a WW smurf who told my friend when he was level 8, so barely started, that if he can't defeat a Diamond player, he doesn't deserve to have fun in this game.

Why can't smurfs act friendly?