the biggest problems with it is self damage, which is very outdated and makes no sense to exist in the current competitive climate. also no dq inside the dojo, which 90% of the time turns games into both players laying in the floor hugging each other getting basically random points and dms
erth tk was good until the meta has evolved to this point where people figured out you are rewarded for doing much simpler straight forward movements.
erth tk used to far outclass taekkyon as a competitive mod, but now taekkyon outclasses erth tk with the current meta. overall tk is good variety and healthy to be in placed in ranked, kicking mods are overlooked and let's players shine with natural skill in a mod that isn't popular and they don't play