I don't know if they changed Atros' legendary, but it's not that OP as yall think it is. You get one Dex-starr shot / shield / string before it goes on a small cooldown (around 3 seconds).
My normal gameplan is once I get cat out, I go into vomit cancel + blood ball pressure to get corner carry and chip, and see if they crouch f22 by doing f22 vomit + ball. The thing is, with the legendary gear, I can no longer do my normal pressure strings (f22 vomit, ball, f12 vomit, ball etc.).
This makes it so that Dex can only: keep a blocked nado safer (but the dude can still armor bouce), extend / restand (still useful), and the occasional b233 to catch the opponents off guard. But you can't just throw out blood balls and shields anymore (remember, there is a cooldown).
TLDR: Cat is always out, but each ball / shield / cat string will put Cat into a cooldown around 3 seconds. You can no longer throw out shields and blood balls all willy nilly, but you get more consistent restands / combo extensions.