9% of XT nodes doesn't really matter. Did XT mine any blocks ?
No.
This is exactly what XT can only cause. Minimum benefit from the increase but a lot of harm be it with a split or negative press. This wasn't what Bitcoin needed. Unfortunately both Core and XT developers are acting like little children. They should have been able to reach a compromise. The activity around the development is similar to what happens with politics.
If they had only agreed together and implemented something all would be fine. However, I suspect this was planned way back.