"what, I cant use an unfair advantage nobody else is using, and that can cause glitches? forget you!"
it counts as cheating in my book, if i recommended use of it(which i dont) then i'd let you use it, but feel free to join one of the many other blocklander hosted tfc servers
the only unfair advantage would be being able to climb over 3 block high ledges since that's the only thing that works efficiently online, and i think using an edited sprint would get you kicked automatically for going too fast. double-tapping W is easier anyway.
the glitches it can cause only happen to the player.
but hey, you have a problem with it, i won't come to your server. simple as that.