Seems the second group is a vocal minority. This feature helps the first group, but doesn’t help the second group.
According to Signal, the first group is the larger group and this helps the most users of Signal.
Could it be better? Sure. This is still a good step in terms of privacy, even though it doesn’t really improve anonymity.
Its a fair point, and definitely worth pointing out. They aren’t as bad as the others in that very specific way, which is commendable for now while it suits them. The moment they can make more money by selling vs. holding your data, I have no doubts they will pivot.