It's giving the character time to Jiren instead of Toppo. It's showing you how much of a dick Jiren is, while having all the good guys demonstrate their teamwork in front of Jiren, probably because it'll make him snap in his comparison of "solo vs teamwork and sacrifice" attitudes.
Jiren in the anime had nothing until the last minute and Toppo wasn't really that interesting either, beside being a candidate for the next GoD.
If I struggled to the end of my determination, to the end of my way of life with my followers, if the result is ruin, then this ruin is inevitable. Grieve. Shed tears. But you cannot regret.