Well the vote passed 82/13 with 15 abstentions. Khan has been removed.
But I think the analysis in the OP is wrong on the last point, as per DW:
All active ICC warrants will remain in place despite Khan's dismissal, because only ICC judges have the authority to withdraw warrants.
The play might rather be that a new prosecutor will just not do their job or do it badly if any arrest is ever made. And also preventing Khan from issuing new warrants obviously.