To me it's not bad because it can't be used like other kicks.
You actually need range to get that kick off. Constant pressure or great distance will nullify that kick. It takes 3 modifiers to use that kick. In real life it's not an easy kick to stop. It's a Tae Kwon Do kick which has variations such as a two touch double body kick.
Eating the body kick from the two touch isn't bad, block your head or sway or dash out the way it's not impossible. We don't even have the full roster yet, Pettis and Diakiese users are the only two in the beta that have it. I plan on using Diakiese even after the beta. That kick on both Pettis and Diakiese is only a level 2 so it's not that powerful compared to Pettis level 4 showtime kick. It's not impossible to stop just as the 1-2's aren't impossible to stop.
I understand your frustration because it's a unique kick which goes low then high. But coming from someone who actually uses the move I was only able to use the kick on people who left too much distance between us. Go to the legs and body, that kick has alot of Vulnerability which may result in a trip, or leg rocked event if timed right, regular rocked event, knockdown or Ko.
Go to the practice mode choose Pettis or Diakiese then set the settings to strike recording, enable recording via Left on the D-PAD Pad then use the two touch Kick while playing as your opponent, after that hit Up on the D-PAD to turn playback on and the CPU will act out that command so that you can practice movement, counters takedowns, blocking, or whatever you want to practice.
Blocking Two Touch Kick
Sway The Two Touch Kick
Dash Away From The Two Touch Kick