People saying "if you sacrifice Chloe there's no point" are missing something, IMO.
It wasn't just the universe going "fuck you I gave you time powers to show you that you can't do anything with time powers". If not for Max's powers, she never would have gotten to reconnect with Chloe at all. Never would have had all those memories folks posted images of. She may have stayed in her shell and never became the stronger, more confident Max. She might not have been able to save Kate. Or connect with Dana, Juliet, Victoria, Taylor, Courtney, Alyssa, Daniel and all the others she wasn't initially friends within the same way. Or let the truth about Rachel become known. Hell, Jefferson might have walked without her because we don't know that Nathan flipped on him.
If anything, the universe gave Max a gift: time with her friend that she'll remember long after the immediate pain of loss, knowledge to stop a dangerous criminal, self-confidence, and connections for the future.