Thinking about this logically.
Samsung have a finite level of resources for mobile.
Samsung will likely have scrutinised data from previous betas so will have a strong idea of volume of feedback. If they opened up beta (outside of the comment previously from
@Glenntech) then the volume of feedback that would have to be reviewed would not only exceed capacity but also would slow down the stable release.
Since One UI7 beta was released, the forum has been extremely busy. Scale that up.......
I'm presuming you weren't eligible or unable to join? Based on previous betas, Samsung may open up more capacity in the coming days (but this is speculative on my part - Samsung haven't said anything about this publicly).
S24 Ultra