The only hero i can say that is hard to play is meepo, because if you fuck up your micro you lose the game. No hero is hard to play, it's all about clicking buttons.
I wan't to ask you, how is landing Svens' gauntlet is harder than landing Tides' gush, or CKs' bolt, or Tinkers' laser? I guess you just love to hug your teammates when laning against Sven.
Or, for example, how it's harder to farm wood camps by Ursa or Axe or Syla than Prophet? The only reason to rage on Prophet is his split-pushing capabilities and you can easily deny them by bringing dust/smoke to gank him when he pushes.
I understand your point, and these heroes are annoying when you can't handle them properly, but hating people for picking their favorite heroes and enjoying the game? Really?
For fuck sake, storm spirit is a garbage hero who countered by a freaking silence or mana drain. Buy an Orchid or Necro and get over it.