I don't think it's useless. If people keep asking for it for long enough, and they continue to see it for years and years, they might start reconsidering it.
On the contrary, if people stop asking for it, they may take that as a sign that people aren't interested, only reinforcing their decision.
I wouldn't be surprised if there is currently stuff in the game that was implemented precisely because people kept asking it long enough, which wouldn't exist if people had stopped.
In 2014 FDEV announced that ED will be translated into Polish language. We've been asking for it for 6 years, very vocally, very often, very polite (mostly).
We've had multiple CM's promising us (actually using that word) they will find out if and when this will happen.
We've been sending nice gift (custom made calendar with beautiful Elite screenshots) to David Braben with a nice letter reminding about our community every year since 2015. (And we know he was getting them, because he was posting about on social media).
And yet here we are 10 years later with no Polish translation.
Do you know what's the worst? FDEV never actually said they wouldn't do it. They never confirmed they were done with their plans to do it.
You got closure, a definite answer it's not happening. Accept it. Because spamming the forums is not they way to get things done.