Aside from a realism complaint, I honestly can't see why people have a hard time fighting lolstabbing pikemen. It is, quite literally, the most obviously telegraphed attack in the game. If you see a pikeman run around you, or jump, block down. How is it that people can react in 1/4 of a second or less during a normal melee fight, yet a spinning jump attack that takes at least half a second, if not a full second to complete and can only come from 1 attack direction is hard to block?
It's a slow, risky, one directional attack. Generally the only reasons I use it are A: The person I'm fighting is an idiot who can only spam and doesn't have a right mouse button. B: I don't have time to pull out my sidearm. or C: I need to keep my pike ready after I kill my current opponent, and trying to pick it back up would waste too much time.
Well... those, and it's just a fun attack to use.
Even discounting all of that, it's a combat style that only a tiny tiny number of players actually use (it's a damn pain in the ass to learn how to use correctly, I can't count how many times it got me 1 shotted trying to learn it). Not really any reason to totally change game mechanics because of an unrealistic play-style that a tiny number of people use.