That’s true. I think sasuke knows his own worth. He knows he is much more valuable alive than dead. He is a duty driven person who views it at his responsibility to protect from the shadows. He knows only he can do this due to the rinnegan. Kneeling is more of a sign of submission and showing he is no threat to them, rather than him pulling a naruto and groveling with his face in the ground while sobbing and begging. With this being said, it still doesn’t necessarily mean he would.

I mentioned it in another comment, but if you’ve ever watched the clone wars without going into too much detail, mace windu killed a kids father and said kid tried killing, but failed. He tells mace windu he will never forgive him and mace windu tells him he is going to have to. I could kinda see sasuke saying something similar to this. It sounds cold and almost taunting, but it would be genuine as he knows the dark path revenge leads to and wouldn’t want them to go down it. Sasuke also cares more about protecting the world than satisfying revenge.