Yeah I think you might be in the wrong thread there JoshuaFX, this is the anime thread, not the random japanese games thread.
And seriously Neonivek, if you have that much of a problem with it, how about, oh, you know,
not watching those shows? I mean even if you are a rom-com only junkie (which seems to be the ones most likely ones to abuse that trope), I can still think of plenty shows that either don't use that trope, or the only times it happens are when the character actually did something that deserves slapping. If you don't like it, don't watch it, because honestly I can't say that I have found that trope suddenly overwhelming present across my entire anime playlist as you seem to be suggesting that it is. I mean I can think of several shows offhand that don't have this trope present despite having a number of female and male characters, as well as several more on top of that that don't have it due to having mainly male or female casts. In fact that only genre I'm really seeing it be fairly omnipresent in is harem shows, and honestly in some of those the protagonist is doing things that deserve him a lot more than a simple slap.
Sure, I'll take an honest discussion about the flaws of a show in this thread anytime, but this seems like at least the third or fourth time you've come into the thread with nothing but a near identical post about how you hate this particular trope cropping up "all across anime", accompanied by mentions from one of a very small handful of examples you seem to particularly dislike. It's not accomplishing anything but reiterating the same ground, nor is it being an honest, productive discussion at this point.