There will always be people out there suffering and hurting, who are beyond Deku's capacity to help. That doesn't invalidate the work that heroes do, however; if they can't save everyone ...

Deku is very grateful for his new support gear that allows him to work as a hero again ... They’re soon called out for an emergency, and the entire class goes to handle it swiftly.

My Hero Academia volume 42, the final installment of the manga, was recently released and introduced minor modifications along with a new chapter, the now-famous chapter 431.