About their own mistakes and deaths. Being in base and buying items obviously doesn't give me enough time to ping and notify the players that my mid laner opponent is missing.
I mean, maybe in a really high elo, players would actually TAKE THE PING INTO CONSIDERATION, but now days it just became an excuse to blame someone else for your own mistakes.
Proof? The game i was in, not only did Leona not put ANY wards, but the enemy ward was pretty much visible in the bush and no one made an effort to kill it.
And let's be real, as if my "SS" would totally prevent you from dying, yeah, sure.
Those players are some pretty disoriented players that just live to grieve and write "nice ss n**b" ..