The fight is over with anyway with jq dead. It might not end immediately, but dragging it out is bad. Not like your team would have gained ults. It was already full ults. If anything, usi g ults to stop rez would have been favorable to mercy team.
Its a yolo rez attempt to keep fight going 5v5. Kiriko exists to keep healing up and bob was out. Suzu could have been used.
You even see the kiriko use suzu late too. There are 90 sec left. The team needs to reset asap