If it were just a buff, sure, but it's also a huge attack that you wanna fit as much as you can in, preferably 4+ Saber Dances from the esprit it generates alone. It's tied to your opener and timed with other CDs to have a decent consistent window. Kinda like SB MCH (though it's not nearlg as brutal). Communication mitigates the issue - if the other DNC even fares - but it delays your opener and potentially throws off your CDs forcing you to delay later during the fight. And hope this doesn't cause issues later when it comes off CD.

It's not a huge issue. I'd file it personally as a QoL fix if it's ever addressed.