Yes, she came to her own decision. I'm referring to the incredible lopsidedness of how the whole movie shows Spock wrestling with the decision, but her side of that is forced completely offscreen.
She had more agency in stid when she was allowed to express her feelings in her relationship and interact with her boyfriend (which includes arguing, something the guys do with Spock all the time and in all contexts and no one cares) , but since some fans have double standards and criticize women for stuff they actually praise the guys for (eg she's ironically hated for the very thing fans love about Mccoy's interactions with Spock), I guess beyond's writers thought that completely deleting her pov and making Mccoy say that maybe she was 'upset', without actually allowing her to express that, or other feelings, on screen is more 'feminist' and would placate those fans. Not to mention they use her own relationship as an excuse to make the two guys interact and show emotion all the while she, who is actually part of the relationship, isn't allowed the same courtesy (because, in some fans' almost blackmail, if she does, she's a bitch).
That isn't treating women equally or being inclusive of their voices, but then again Pegg admitted he can't write for women and in their dynamics. Beyond is more or less like his other movies when it comes to some aspects.
Ironically, Uhura's relationship (and her character) still IS more important to the lead male character and his arc (her feelings also are implied being important
to him) so if people minimize it, or claim that the writers ditched it, they are projecting.
However, it seems like, from a general perspective, she's more acceptable in beyond because of the illusion she's more passive than in stid, and she basically allows the guys to express feelings she isn't allowed to express herself as she gotta be a strongggg (independent. woman .) and kindly shut up because we have no time for her stupid feelings (and Sulu's, don't forget they cut his major bonding scene with Uhura too) that take away from the bros. Even the romance seems to be suddenly more acceptable to some when she 'shuts up'.
The fact there are people who, even for Beyond, still insist on that 'she is just a love interest!' and still call her a damsel in distress or too emotional it really speaks volumes about how, in the eyes of people who have firmly established sexist double standards, Uhura just can't win. Hopeless. I even read some complaining that Jaylah's one emotional moment where she is scared and remembers her family makes her 'weak' and ruined her.
