Board Thread:Theories and Speculation/@comment-31099706-20170327120301/@comment-31099706-20170510091928

Yes, he maybe able to choose how he does it, but that doesn't change the fact that it's a MS jutsu, and a MS jutsu that was made for the sole reason of one shotting people.

The jutsus purpose itself is like Fireball jutsus purpose, destroy whatever it can, there's no holding back for Fireball jutsus just like there's no holding back for Tsukuyomi, a jutsu that was meant to mentally destroy a opponents mind, nothing more, nothing less.